TY  - JOUR
AU  - Panić, Vesna V.
AU  - Jovanović, Jelena D.
AU  - Spasojević, Jelena P.
AU  - Savić, Sanja I.
AU  - Marković, Maja D.
AU  - Radulović, Aleksandra M.
AU  - Adnađević, Borivoj K.
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7349
AB  - High concentrations of LTA zeolite (27-52mass%) were embedded in poly(methacrylic acid) (PMAA) matrix to obtain composite hydrogels with porosity and active sites originating from both components. Substandard mechanics of PMAA and aggregation of zeolite particles, were thereby overcome. The composites had remarkably higher density than PMAA xerogel (1700 to1400 kg m−3), higher crosslinking density (54.8 to1.29 mol m−3) and lower swelling degree (41 to 420 kg kg−1). Zeolite particles were uniformly dispersed in PMAA matrix and there was no agglomeration or leaching of zeolite despite very high concentrations. XRD patterns revealed that the inclusion of zeolite particles affected the short-range order in the PMAA matrix. Being an active filler LTA zeolite notably improved thermal stability and mechanics of PMAA hydrogel, multiplying the storage modulus 5.2 times in dry and 21.8 times in swollen state. Structure–property correlations were provided making the base for further development of tailor-made zeolite-PMAA composite hydrogels.
PB  - Elsevier
T2  - Chemical Engineering Science
T1  - Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite
SP  - 119981
VL  - 292
DO  - 10.1016/j.ces.2024.119981
ER  - 

@article{
author = "Panić, Vesna V. and Jovanović, Jelena D. and Spasojević, Jelena P. and Savić, Sanja I. and Marković, Maja D. and Radulović, Aleksandra M. and Adnađević, Borivoj K.",
year = "2024",
abstract = "High concentrations of LTA zeolite (27-52mass%) were embedded in poly(methacrylic acid) (PMAA) matrix to obtain composite hydrogels with porosity and active sites originating from both components. Substandard mechanics of PMAA and aggregation of zeolite particles, were thereby overcome. The composites had remarkably higher density than PMAA xerogel (1700 to1400 kg m−3), higher crosslinking density (54.8 to1.29 mol m−3) and lower swelling degree (41 to 420 kg kg−1). Zeolite particles were uniformly dispersed in PMAA matrix and there was no agglomeration or leaching of zeolite despite very high concentrations. XRD patterns revealed that the inclusion of zeolite particles affected the short-range order in the PMAA matrix. Being an active filler LTA zeolite notably improved thermal stability and mechanics of PMAA hydrogel, multiplying the storage modulus 5.2 times in dry and 21.8 times in swollen state. Structure–property correlations were provided making the base for further development of tailor-made zeolite-PMAA composite hydrogels.",
publisher = "Elsevier",
journal = "Chemical Engineering Science",
title = "Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite",
pages = "119981",
volume = "292",
doi = "10.1016/j.ces.2024.119981"
}

Panić, V. V., Jovanović, J. D., Spasojević, J. P., Savić, S. I., Marković, M. D., Radulović, A. M.,& Adnađević, B. K.. (2024). Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite. in Chemical Engineering Science
Elsevier., 292, 119981.
https://doi.org/10.1016/j.ces.2024.119981

Panić VV, Jovanović JD, Spasojević JP, Savić SI, Marković MD, Radulović AM, Adnađević BK. Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite. in Chemical Engineering Science. 2024;292:119981.
doi:10.1016/j.ces.2024.119981 .

Panić, Vesna V., Jovanović, Jelena D., Spasojević, Jelena P., Savić, Sanja I., Marković, Maja D., Radulović, Aleksandra M., Adnađević, Borivoj K., "Structure–property correlations for composite hydrogels based on poly(methacrylic acid) and high concentrations of LTA zeolite" in Chemical Engineering Science, 292 (2024):119981,
https://doi.org/10.1016/j.ces.2024.119981 . .

TY  - CONF
AU  - Pantić, Olga
AU  - Savić, Sanja
AU  - Panić, Vesna
AU  - Marković, Maja
AU  - Spasojević, Pavle
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6860
AB  - The importance of producing thermoset polymers from natural resources has grown due to environmental concerns. Implementing the biorefinery concept is vital for replacing petroleum-based raw materials and transferring to cleaner technologies. Unsaturated polyester resins (UPRs) are a significant class of thermosetting polymers, with a wide range of properties gained from a considerable number of materials that are used for their synthesis. They can be used as pure resins or resins reinforced with suitable fillers in composite material production, which is the focus of this research. Generally, UPRs consist of two main components, prepolymer and reactive diluents, commercially both of which are commonly derived from petroleum. So, it is important to find an adequate bio-based alternative not only for styrene as a reactive diluent, but also for monomers that are used for prepolymer synthesis. Many bio-based monomers (propylene glycol, isosorbide, neopentyl glycol) and reactive diluents (vinyl levulinate, butanediol dimethacrylate, dimethyl itaconate) were investigated in formulating a bio-based UPR. Alongside this, many different bio-based fillers (hemp fibres, spent coffee grounds, rosehip seed flour) were also examined, to conclusively obtain a fully bio-based composite material. Sole introduction of bio-based raw materials is insufficient for proper implementation of the biorefinery principle. It is equally important that the final formulation of the obtained composite material demonstrates that it is environmentally and economically feasible. The quality and market price of the bio-based composite material must be at least be comparable to or better than those of a product from a conventional process in order to be competitive.
PB  - Ljubljana : National Institute of Chemistry, Department of Catalysis and Chemical Reaction Engineering
C3  - Book of Abstracts / Next Challenges of Biorefineries, 3rd BioSPRINT Workshop 2nd Bilateral Workshop Portugal, Slovenia, June 14-15, 2023
T1  - Bio-based unsaturated polyester resins – a step towards a biorefinery solution
SP  - 14
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6860
ER  - 

@conference{
author = "Pantić, Olga and Savić, Sanja and Panić, Vesna and Marković, Maja and Spasojević, Pavle",
year = "2023",
abstract = "The importance of producing thermoset polymers from natural resources has grown due to environmental concerns. Implementing the biorefinery concept is vital for replacing petroleum-based raw materials and transferring to cleaner technologies. Unsaturated polyester resins (UPRs) are a significant class of thermosetting polymers, with a wide range of properties gained from a considerable number of materials that are used for their synthesis. They can be used as pure resins or resins reinforced with suitable fillers in composite material production, which is the focus of this research. Generally, UPRs consist of two main components, prepolymer and reactive diluents, commercially both of which are commonly derived from petroleum. So, it is important to find an adequate bio-based alternative not only for styrene as a reactive diluent, but also for monomers that are used for prepolymer synthesis. Many bio-based monomers (propylene glycol, isosorbide, neopentyl glycol) and reactive diluents (vinyl levulinate, butanediol dimethacrylate, dimethyl itaconate) were investigated in formulating a bio-based UPR. Alongside this, many different bio-based fillers (hemp fibres, spent coffee grounds, rosehip seed flour) were also examined, to conclusively obtain a fully bio-based composite material. Sole introduction of bio-based raw materials is insufficient for proper implementation of the biorefinery principle. It is equally important that the final formulation of the obtained composite material demonstrates that it is environmentally and economically feasible. The quality and market price of the bio-based composite material must be at least be comparable to or better than those of a product from a conventional process in order to be competitive.",
publisher = "Ljubljana : National Institute of Chemistry, Department of Catalysis and Chemical Reaction Engineering",
journal = "Book of Abstracts / Next Challenges of Biorefineries, 3rd BioSPRINT Workshop 2nd Bilateral Workshop Portugal, Slovenia, June 14-15, 2023",
title = "Bio-based unsaturated polyester resins – a step towards a biorefinery solution",
pages = "14",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6860"
}

Pantić, O., Savić, S., Panić, V., Marković, M.,& Spasojević, P.. (2023). Bio-based unsaturated polyester resins – a step towards a biorefinery solution. in Book of Abstracts / Next Challenges of Biorefineries, 3rd BioSPRINT Workshop 2nd Bilateral Workshop Portugal, Slovenia, June 14-15, 2023
Ljubljana : National Institute of Chemistry, Department of Catalysis and Chemical Reaction Engineering., 14.
https://hdl.handle.net/21.15107/rcub_technorep_6860

Pantić O, Savić S, Panić V, Marković M, Spasojević P. Bio-based unsaturated polyester resins – a step towards a biorefinery solution. in Book of Abstracts / Next Challenges of Biorefineries, 3rd BioSPRINT Workshop 2nd Bilateral Workshop Portugal, Slovenia, June 14-15, 2023. 2023;:14.
https://hdl.handle.net/21.15107/rcub_technorep_6860 .

Pantić, Olga, Savić, Sanja, Panić, Vesna, Marković, Maja, Spasojević, Pavle, "Bio-based unsaturated polyester resins – a step towards a biorefinery solution" in Book of Abstracts / Next Challenges of Biorefineries, 3rd BioSPRINT Workshop 2nd Bilateral Workshop Portugal, Slovenia, June 14-15, 2023 (2023):14,
https://hdl.handle.net/21.15107/rcub_technorep_6860 .

TY  - CONF
AU  - Pantić, Olga
AU  - Panić, Vesna
AU  - Marković, Maja
AU  - Spasojević Savković, Milica
AU  - Savić, Sanja
AU  - Kalagasidis Krušić, Melina
AU  - Spasojević, Pavle
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6867
AB  - Biocomposites are materials that are composed of a matrix and fillers both of which derived from
renewable resources. They offer an alternative to traditional petroleum-based composites and
have gained interest due to potential environmental benefits and sustaina
idea, itaconic and succinic acids and propylene glycol were used in the synthesis of a biobased
unsaturated polyester, diluted with biobased reactive diluent, dimethyl itaconate, to cure fully
biobased unsaturated polyester resin (UPR). Despite having a low environmental impact, the
mechanical properties of biobased UPRs are not considered commercially viable compared to
their petroleum-based counterparts. To lessen the discrepancy between the two, nanocellulose
(NC) was incorporated into the biobased UPR in two ways. Firstly, NC was added during synthesis,
while secondly it was added after the synthesis of UPR was completed. Both series implied the
use of three different quan s of NC (1, 2, 3 wt.%). FTIR spectroscopy, gel content analysis,
SEM, dynamic mechanical analysis, and uniaxial tensile test were used to characterize obtained
biocomposites. It was demonstrcted that when NC was added during the synthesis, it had no
effect on UPR viscosity. On the other hand, adding NC after the synthesis significantly increased
viscosity. Overall results showed that higher quantities of NC increased tensile strength, storage
modulus at lower frequencies, and decreased glass transition temperature.
PB  - University of North Texas
C3  - Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France
T1  - ADVANCING BIOCOMPOSITES: INTRODUCTION OF NANOCELLULOSE AS A SUSTAINABLE FILLER OF BIOBASED UNSATURATED POLYESTER RESINS
SP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6867
ER  - 

@conference{
author = "Pantić, Olga and Panić, Vesna and Marković, Maja and Spasojević Savković, Milica and Savić, Sanja and Kalagasidis Krušić, Melina and Spasojević, Pavle",
year = "2023",
abstract = "Biocomposites are materials that are composed of a matrix and fillers both of which derived from
renewable resources. They offer an alternative to traditional petroleum-based composites and
have gained interest due to potential environmental benefits and sustaina
idea, itaconic and succinic acids and propylene glycol were used in the synthesis of a biobased
unsaturated polyester, diluted with biobased reactive diluent, dimethyl itaconate, to cure fully
biobased unsaturated polyester resin (UPR). Despite having a low environmental impact, the
mechanical properties of biobased UPRs are not considered commercially viable compared to
their petroleum-based counterparts. To lessen the discrepancy between the two, nanocellulose
(NC) was incorporated into the biobased UPR in two ways. Firstly, NC was added during synthesis,
while secondly it was added after the synthesis of UPR was completed. Both series implied the
use of three different quan s of NC (1, 2, 3 wt.%). FTIR spectroscopy, gel content analysis,
SEM, dynamic mechanical analysis, and uniaxial tensile test were used to characterize obtained
biocomposites. It was demonstrcted that when NC was added during the synthesis, it had no
effect on UPR viscosity. On the other hand, adding NC after the synthesis significantly increased
viscosity. Overall results showed that higher quantities of NC increased tensile strength, storage
modulus at lower frequencies, and decreased glass transition temperature.",
publisher = "University of North Texas",
journal = "Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France",
title = "ADVANCING BIOCOMPOSITES: INTRODUCTION OF NANOCELLULOSE AS A SUSTAINABLE FILLER OF BIOBASED UNSATURATED POLYESTER RESINS",
pages = "52",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6867"
}

Pantić, O., Panić, V., Marković, M., Spasojević Savković, M., Savić, S., Kalagasidis Krušić, M.,& Spasojević, P.. (2023). ADVANCING BIOCOMPOSITES: INTRODUCTION OF NANOCELLULOSE AS A SUSTAINABLE FILLER OF BIOBASED UNSATURATED POLYESTER RESINS. in Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France
University of North Texas., 52.
https://hdl.handle.net/21.15107/rcub_technorep_6867

Pantić O, Panić V, Marković M, Spasojević Savković M, Savić S, Kalagasidis Krušić M, Spasojević P. ADVANCING BIOCOMPOSITES: INTRODUCTION OF NANOCELLULOSE AS A SUSTAINABLE FILLER OF BIOBASED UNSATURATED POLYESTER RESINS. in Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France. 2023;:52.
https://hdl.handle.net/21.15107/rcub_technorep_6867 .

Pantić, Olga, Panić, Vesna, Marković, Maja, Spasojević Savković, Milica, Savić, Sanja, Kalagasidis Krušić, Melina, Spasojević, Pavle, "ADVANCING BIOCOMPOSITES: INTRODUCTION OF NANOCELLULOSE AS A SUSTAINABLE FILLER OF BIOBASED UNSATURATED POLYESTER RESINS" in Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France (2023):52,
https://hdl.handle.net/21.15107/rcub_technorep_6867 .

TY  - CONF
AU  - Spasojević, Pavle
AU  - Savić, Sanja
AU  - Panić, Vesna
AU  - Spasojević Savković, Milica
AU  - Marković, Maja
AU  - Pantić, Olga
AU  - Popović, Ivanka
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6869
AB  - Emerging efforts in the field of biocomposites established novel combinations of biobased matrix
materials and reinforcements, as well as the optimization of curing conditions, to enhance their
properties and expand their range of applications. The curing conditions of nanocellulose

reinforced biobased unsaturated polyester resin (UPR) based on itaconic acid and it derivatives’

were examined within this work. Since the curing process of biobased UPR requires the presence
of both an initiator and an activator, the optimization was conducted in two phases. The first
phase investigated the effect of different concentrations of an activator, cobalt octoate, (0.5, 1.0
and 1.5 mass%) with a constant concentration of an initiator, a mixture of dibenzoyl peroxide
(DBP) and methyl ethyl ketone peroxide (MEKP) (DBP to MEKP ratio 1.5:1.0; 2.5 mass% total).
The ratios of DBP and MEKP were varied in the second phase of experiments in the following
manner: 2.5:0,1.75:0.75, 0.75:1.75 and 0:2.5 (keeping the total initiator mass% of 2.5). The effect
of the different curing conditions on the UPR properties was monitored via the gel content
analysis and the uniaxial tensile test. It was shown that the increase in activator concentration
led to the decrease in gel content, tensile strength and elongation at the break. On the other
hand, the increase in dibenzoyl peroxide concentration in the initiator mixture revealed
enhanced overall mechanical properties. The optimal curing conditions were found to be 0.5
mass% of activator, and 1.75:0.75 DBP to MEKP ratio in the initiator mixture. Thereby obtained
UPR biocomposite showed a significant increase in elastic attributes suggesting that these
materials can be used where high elasticity is needed.
C3  - Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France
T1  - OPTIMIZATION OF CURING CONDITIONS FOR NANOCELLULOSE REINFORCED BIOBASED UNSATURATED POLYESTER RESIN
SP  - 56
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6869
ER  - 

@conference{
author = "Spasojević, Pavle and Savić, Sanja and Panić, Vesna and Spasojević Savković, Milica and Marković, Maja and Pantić, Olga and Popović, Ivanka",
year = "2023",
abstract = "Emerging efforts in the field of biocomposites established novel combinations of biobased matrix
materials and reinforcements, as well as the optimization of curing conditions, to enhance their
properties and expand their range of applications. The curing conditions of nanocellulose

reinforced biobased unsaturated polyester resin (UPR) based on itaconic acid and it derivatives’

were examined within this work. Since the curing process of biobased UPR requires the presence
of both an initiator and an activator, the optimization was conducted in two phases. The first
phase investigated the effect of different concentrations of an activator, cobalt octoate, (0.5, 1.0
and 1.5 mass%) with a constant concentration of an initiator, a mixture of dibenzoyl peroxide
(DBP) and methyl ethyl ketone peroxide (MEKP) (DBP to MEKP ratio 1.5:1.0; 2.5 mass% total).
The ratios of DBP and MEKP were varied in the second phase of experiments in the following
manner: 2.5:0,1.75:0.75, 0.75:1.75 and 0:2.5 (keeping the total initiator mass% of 2.5). The effect
of the different curing conditions on the UPR properties was monitored via the gel content
analysis and the uniaxial tensile test. It was shown that the increase in activator concentration
led to the decrease in gel content, tensile strength and elongation at the break. On the other
hand, the increase in dibenzoyl peroxide concentration in the initiator mixture revealed
enhanced overall mechanical properties. The optimal curing conditions were found to be 0.5
mass% of activator, and 1.75:0.75 DBP to MEKP ratio in the initiator mixture. Thereby obtained
UPR biocomposite showed a significant increase in elastic attributes suggesting that these
materials can be used where high elasticity is needed.",
journal = "Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France",
title = "OPTIMIZATION OF CURING CONDITIONS FOR NANOCELLULOSE REINFORCED BIOBASED UNSATURATED POLYESTER RESIN",
pages = "56",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6869"
}

Spasojević, P., Savić, S., Panić, V., Spasojević Savković, M., Marković, M., Pantić, O.,& Popović, I.. (2023). OPTIMIZATION OF CURING CONDITIONS FOR NANOCELLULOSE REINFORCED BIOBASED UNSATURATED POLYESTER RESIN. in Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France, 56.
https://hdl.handle.net/21.15107/rcub_technorep_6869

Spasojević P, Savić S, Panić V, Spasojević Savković M, Marković M, Pantić O, Popović I. OPTIMIZATION OF CURING CONDITIONS FOR NANOCELLULOSE REINFORCED BIOBASED UNSATURATED POLYESTER RESIN. in Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France. 2023;:56.
https://hdl.handle.net/21.15107/rcub_technorep_6869 .

Spasojević, Pavle, Savić, Sanja, Panić, Vesna, Spasojević Savković, Milica, Marković, Maja, Pantić, Olga, Popović, Ivanka, "OPTIMIZATION OF CURING CONDITIONS FOR NANOCELLULOSE REINFORCED BIOBASED UNSATURATED POLYESTER RESIN" in Book of Abstracts / 29thPolyChar - World Forum on Advanced Materials, 26 - 29 September 2023, Nice, France (2023):56,
https://hdl.handle.net/21.15107/rcub_technorep_6869 .

TY  - CONF
AU  - Panić, Vesna V.
AU  - Jovanović, Jelena D.
AU  - Savić, Sanja I.
AU  - Marković, Maja D.
AU  - Radulović, Aleksandra M.
AU  - Pantić, Olga
AU  - Adnađević, Borivoj K.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6887
AB  - The preparation of zeolite rich polymeric materials presents a challenge due to the zeolite settling
during synthesis, poor miscibility, the phase separation and generally insufficient interactions
between polymers and zeolites. Combination of LTA, i.e. MFI, zeolite and poly(methacrylic acid) in the
form of soft hydrogel network provided the stabilization of the zeolite particles and enabled synthesis
of composite hydrogels with very high zeolite concentrations (26-52 mass%).
The investigated morphological, mechanical and primary structural properties, water swelling ability
and thermal stability revealed high dependence on zeolite concentration and type. Zeolite particles
were uniformly dispersed in PMAA matrix as confirmed by SEM and there was no agglomeration or
zeolite leaching despite very high concentrations. FTIR spectra disclosed the existence of functional
groups of PMAA network and both zeolite types that interacted mutually and led to increased
crosslinking density. The established interactions changed the PMAA chain dynamics around the
particles, especially of the LTA type, as showed by XRD. Having much more surface groups capable to
generate interaction with PMAA, LTA zeolite stronger affected all of the investigated properties.
Composites’ mechanics was improved both in dry and swollen state compared to the PMAA hydrogel
(up to 21.8 times for the sample with the highest LTA concentration). Thermal stability of the
composites increased with increasing zeolite concentration.
The composition-property correlations were determined making this work the base for further
development of tailor-made zeolite-PMAA composite hydrogels aimed for specific application.
Composites were tested as low-cost, regenerative, environmentally friendly sorbents and showed
better removal of cationic dye compared to both components (PMAA and zeolite) alone.
PB  - Yuktan Technologies
C3  - Abstract Book / 4th International Conference on Advanced Polymer Science and Engineering, 23-25 October, 2023, Valencia, Spain
T1  - Insight and Comparison of Property Improvement in LTA and MFI Zeolite Reinforced Poly(methacrylic acid) Highly Concentrated Composite Hydrogels
SP  - 67
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6887
ER  - 

@conference{
author = "Panić, Vesna V. and Jovanović, Jelena D. and Savić, Sanja I. and Marković, Maja D. and Radulović, Aleksandra M. and Pantić, Olga and Adnađević, Borivoj K.",
year = "2023",
abstract = "The preparation of zeolite rich polymeric materials presents a challenge due to the zeolite settling
during synthesis, poor miscibility, the phase separation and generally insufficient interactions
between polymers and zeolites. Combination of LTA, i.e. MFI, zeolite and poly(methacrylic acid) in the
form of soft hydrogel network provided the stabilization of the zeolite particles and enabled synthesis
of composite hydrogels with very high zeolite concentrations (26-52 mass%).
The investigated morphological, mechanical and primary structural properties, water swelling ability
and thermal stability revealed high dependence on zeolite concentration and type. Zeolite particles
were uniformly dispersed in PMAA matrix as confirmed by SEM and there was no agglomeration or
zeolite leaching despite very high concentrations. FTIR spectra disclosed the existence of functional
groups of PMAA network and both zeolite types that interacted mutually and led to increased
crosslinking density. The established interactions changed the PMAA chain dynamics around the
particles, especially of the LTA type, as showed by XRD. Having much more surface groups capable to
generate interaction with PMAA, LTA zeolite stronger affected all of the investigated properties.
Composites’ mechanics was improved both in dry and swollen state compared to the PMAA hydrogel
(up to 21.8 times for the sample with the highest LTA concentration). Thermal stability of the
composites increased with increasing zeolite concentration.
The composition-property correlations were determined making this work the base for further
development of tailor-made zeolite-PMAA composite hydrogels aimed for specific application.
Composites were tested as low-cost, regenerative, environmentally friendly sorbents and showed
better removal of cationic dye compared to both components (PMAA and zeolite) alone.",
publisher = "Yuktan Technologies",
journal = "Abstract Book / 4th International Conference on Advanced Polymer Science and Engineering, 23-25 October, 2023, Valencia, Spain",
title = "Insight and Comparison of Property Improvement in LTA and MFI Zeolite Reinforced Poly(methacrylic acid) Highly Concentrated Composite Hydrogels",
pages = "67",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6887"
}

Panić, V. V., Jovanović, J. D., Savić, S. I., Marković, M. D., Radulović, A. M., Pantić, O.,& Adnađević, B. K.. (2023). Insight and Comparison of Property Improvement in LTA and MFI Zeolite Reinforced Poly(methacrylic acid) Highly Concentrated Composite Hydrogels. in Abstract Book / 4th International Conference on Advanced Polymer Science and Engineering, 23-25 October, 2023, Valencia, Spain
Yuktan Technologies., 67.
https://hdl.handle.net/21.15107/rcub_technorep_6887

Panić VV, Jovanović JD, Savić SI, Marković MD, Radulović AM, Pantić O, Adnađević BK. Insight and Comparison of Property Improvement in LTA and MFI Zeolite Reinforced Poly(methacrylic acid) Highly Concentrated Composite Hydrogels. in Abstract Book / 4th International Conference on Advanced Polymer Science and Engineering, 23-25 October, 2023, Valencia, Spain. 2023;:67.
https://hdl.handle.net/21.15107/rcub_technorep_6887 .

Panić, Vesna V., Jovanović, Jelena D., Savić, Sanja I., Marković, Maja D., Radulović, Aleksandra M., Pantić, Olga, Adnađević, Borivoj K., "Insight and Comparison of Property Improvement in LTA and MFI Zeolite Reinforced Poly(methacrylic acid) Highly Concentrated Composite Hydrogels" in Abstract Book / 4th International Conference on Advanced Polymer Science and Engineering, 23-25 October, 2023, Valencia, Spain (2023):67,
https://hdl.handle.net/21.15107/rcub_technorep_6887 .

TY  - CONF
AU  - Marković, Maja D.
AU  - Miladinović, Nina N.
AU  - Savić, Sanja I.
AU  - Panić, Vesna V.
AU  - Pantić, Olga J.
AU  - Spasojević, Pavle M.
AU  - Pjanović, Rada V.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7300
AB  - Controlled release of drugs is a promising tool for improvement of therapy for many 
diseases because drug concentration for long period of time is kept constant, whereas
number of drug doses and side effects are reduced. pH sensitive hydrogels, such as 
hydrogels based on poly(methacrylic acid) (PMAA), are extensively employed for 
drug delivery. The synthesis of the hydrogel is one of the most important factors
which affect encapsulation of drug and its bioactivity. In present study, we investigate 
if the encapsulation of poorly water-soluble active substance (caffeine) during the 
synthesis of PMAA hydrogels, and later its controlled release from the PMAA
hydrogels, can be achieved by applying novel ”green” method for the hydrogels 
preparation. The PMAA hydrogels with encapsulated caffeine and various amount of 
crosslinker are prepared by free radical polymerisation in aqueous solution and 
ambient conditions by using novel initiation system based on hydrogen peroxide and 
vitamin C. The swelling behaviour of the PMAA hydrogels and controlled release of 
caffeine are investigated in two media with pH 1 and pH 6.8 as simulation of human 
stomach and intestines, respectively. The SDeq values of the PMAA hydrogels are
eight times higher in the medium with pH 6.8 and as a consequence, three times higher
amount of caffeine is released in that medium. The increase in the crosslinker amount 
leads to the decrease of SDeq values of the PMAA hydrogels and amount of released 
caffeine. The results show that the PMAA hydrogels have great potential for controlled
release of poorly water-soluble drugs.
PB  - Leskovac : Faculty of Technology
C3  - Book of abstracts / 15th International Symposium "Novel Technologies and Sustainable Development" Leskovac, October, 20-21, 2023
T1  - POLY(METHACRYLIC ACID) HYDROGELS PREPARED BY ”GREEN”  METHOD: SWELLING PROPERTIES AND CONTROLLED RELEASE OF  CAFFEINE
SP  - 97
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7300
ER  - 

@conference{
author = "Marković, Maja D. and Miladinović, Nina N. and Savić, Sanja I. and Panić, Vesna V. and Pantić, Olga J. and Spasojević, Pavle M. and Pjanović, Rada V.",
year = "2023",
abstract = "Controlled release of drugs is a promising tool for improvement of therapy for many 
diseases because drug concentration for long period of time is kept constant, whereas
number of drug doses and side effects are reduced. pH sensitive hydrogels, such as 
hydrogels based on poly(methacrylic acid) (PMAA), are extensively employed for 
drug delivery. The synthesis of the hydrogel is one of the most important factors
which affect encapsulation of drug and its bioactivity. In present study, we investigate 
if the encapsulation of poorly water-soluble active substance (caffeine) during the 
synthesis of PMAA hydrogels, and later its controlled release from the PMAA
hydrogels, can be achieved by applying novel ”green” method for the hydrogels 
preparation. The PMAA hydrogels with encapsulated caffeine and various amount of 
crosslinker are prepared by free radical polymerisation in aqueous solution and 
ambient conditions by using novel initiation system based on hydrogen peroxide and 
vitamin C. The swelling behaviour of the PMAA hydrogels and controlled release of 
caffeine are investigated in two media with pH 1 and pH 6.8 as simulation of human 
stomach and intestines, respectively. The SDeq values of the PMAA hydrogels are
eight times higher in the medium with pH 6.8 and as a consequence, three times higher
amount of caffeine is released in that medium. The increase in the crosslinker amount 
leads to the decrease of SDeq values of the PMAA hydrogels and amount of released 
caffeine. The results show that the PMAA hydrogels have great potential for controlled
release of poorly water-soluble drugs.",
publisher = "Leskovac : Faculty of Technology",
journal = "Book of abstracts / 15th International Symposium "Novel Technologies and Sustainable Development" Leskovac, October, 20-21, 2023",
title = "POLY(METHACRYLIC ACID) HYDROGELS PREPARED BY ”GREEN”  METHOD: SWELLING PROPERTIES AND CONTROLLED RELEASE OF  CAFFEINE",
pages = "97",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7300"
}

Marković, M. D., Miladinović, N. N., Savić, S. I., Panić, V. V., Pantić, O. J., Spasojević, P. M.,& Pjanović, R. V.. (2023). POLY(METHACRYLIC ACID) HYDROGELS PREPARED BY ”GREEN”  METHOD: SWELLING PROPERTIES AND CONTROLLED RELEASE OF  CAFFEINE. in Book of abstracts / 15th International Symposium "Novel Technologies and Sustainable Development" Leskovac, October, 20-21, 2023
Leskovac : Faculty of Technology., 97.
https://hdl.handle.net/21.15107/rcub_technorep_7300

Marković MD, Miladinović NN, Savić SI, Panić VV, Pantić OJ, Spasojević PM, Pjanović RV. POLY(METHACRYLIC ACID) HYDROGELS PREPARED BY ”GREEN”  METHOD: SWELLING PROPERTIES AND CONTROLLED RELEASE OF  CAFFEINE. in Book of abstracts / 15th International Symposium "Novel Technologies and Sustainable Development" Leskovac, October, 20-21, 2023. 2023;:97.
https://hdl.handle.net/21.15107/rcub_technorep_7300 .

Marković, Maja D., Miladinović, Nina N., Savić, Sanja I., Panić, Vesna V., Pantić, Olga J., Spasojević, Pavle M., Pjanović, Rada V., "POLY(METHACRYLIC ACID) HYDROGELS PREPARED BY ”GREEN”  METHOD: SWELLING PROPERTIES AND CONTROLLED RELEASE OF  CAFFEINE" in Book of abstracts / 15th International Symposium "Novel Technologies and Sustainable Development" Leskovac, October, 20-21, 2023 (2023):97,
https://hdl.handle.net/21.15107/rcub_technorep_7300 .

TY  - JOUR
AU  - Marković, Maja D.
AU  - Panić, Vesna V.
AU  - Savić, Sanja I.
AU  - Ugrinović, Vukašin Đ.
AU  - Pjanović, Rada V.
AU  - Spasojević, Milica M.
AU  - Spasojević, Pavle M.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5092
AB  - Materials sensitive to external stimuli are recognized as safe and effective tool able to respond to specific demands in the therapy of various diseases. Thermo sensitive hydrogels based on poly(N-isopropylacrylamide) (P(NIPAAM)) are widely investigated for targeted drug delivery. Still, the abundance of the stimuli in the human body often requires more than one responsive group able to act simultaneously to achieve optimal therapeutic effects. Due to its pH sensitivity and bio-based production, crotonic acid (CA) was a monomer of choice for preparation of eco-friendly copolymer hydrogels based on NIPAAM and CA (P(NIPAAMcoCA)), which turned to be thermo and pH sensitive at the same time. The potential of the P(NIPAAMcoCA) system for encapsulation and controlled release of drugs with different solubility was investigated engaging water-soluble lidocaine hydrochloride and poorly water-soluble ibuprofen as model drugs. The hydrogels were characterized by various technics: FTIR, DSC, SEM and single compressive tests, while swelling behavior and controlled release of the drugs were analyzed with respect to the CA amount in two environments with different pH values at 25 °C and 37 °C. It was demonstrated that due to their dual responsiveness the P(NIPAAMcoCA) hydrogels have potential for controlled release of drugs with different solubility.
PB  - Elsevier
T2  - Microporous and Mesoporous Materials
T1  - Biobased thermo/pH sensitive poly(N-isopropylacrylamide-co-crotonic acid) hydrogels for targeted drug delivery
SP  - 111817
VL  - 335
DO  - 10.1016/j.micromeso.2022.111817
ER  - 

@article{
author = "Marković, Maja D. and Panić, Vesna V. and Savić, Sanja I. and Ugrinović, Vukašin Đ. and Pjanović, Rada V. and Spasojević, Milica M. and Spasojević, Pavle M.",
year = "2022",
abstract = "Materials sensitive to external stimuli are recognized as safe and effective tool able to respond to specific demands in the therapy of various diseases. Thermo sensitive hydrogels based on poly(N-isopropylacrylamide) (P(NIPAAM)) are widely investigated for targeted drug delivery. Still, the abundance of the stimuli in the human body often requires more than one responsive group able to act simultaneously to achieve optimal therapeutic effects. Due to its pH sensitivity and bio-based production, crotonic acid (CA) was a monomer of choice for preparation of eco-friendly copolymer hydrogels based on NIPAAM and CA (P(NIPAAMcoCA)), which turned to be thermo and pH sensitive at the same time. The potential of the P(NIPAAMcoCA) system for encapsulation and controlled release of drugs with different solubility was investigated engaging water-soluble lidocaine hydrochloride and poorly water-soluble ibuprofen as model drugs. The hydrogels were characterized by various technics: FTIR, DSC, SEM and single compressive tests, while swelling behavior and controlled release of the drugs were analyzed with respect to the CA amount in two environments with different pH values at 25 °C and 37 °C. It was demonstrated that due to their dual responsiveness the P(NIPAAMcoCA) hydrogels have potential for controlled release of drugs with different solubility.",
publisher = "Elsevier",
journal = "Microporous and Mesoporous Materials",
title = "Biobased thermo/pH sensitive poly(N-isopropylacrylamide-co-crotonic acid) hydrogels for targeted drug delivery",
pages = "111817",
volume = "335",
doi = "10.1016/j.micromeso.2022.111817"
}

Marković, M. D., Panić, V. V., Savić, S. I., Ugrinović, V. Đ., Pjanović, R. V., Spasojević, M. M.,& Spasojević, P. M.. (2022). Biobased thermo/pH sensitive poly(N-isopropylacrylamide-co-crotonic acid) hydrogels for targeted drug delivery. in Microporous and Mesoporous Materials
Elsevier., 335, 111817.
https://doi.org/10.1016/j.micromeso.2022.111817

Marković MD, Panić VV, Savić SI, Ugrinović VĐ, Pjanović RV, Spasojević MM, Spasojević PM. Biobased thermo/pH sensitive poly(N-isopropylacrylamide-co-crotonic acid) hydrogels for targeted drug delivery. in Microporous and Mesoporous Materials. 2022;335:111817.
doi:10.1016/j.micromeso.2022.111817 .

Marković, Maja D., Panić, Vesna V., Savić, Sanja I., Ugrinović, Vukašin Đ., Pjanović, Rada V., Spasojević, Milica M., Spasojević, Pavle M., "Biobased thermo/pH sensitive poly(N-isopropylacrylamide-co-crotonic acid) hydrogels for targeted drug delivery" in Microporous and Mesoporous Materials, 335 (2022):111817,
https://doi.org/10.1016/j.micromeso.2022.111817 . .

TY  - JOUR
AU  - Marković, Maja D.
AU  - Tadić, Julijana D.
AU  - Savić, Sanja I.
AU  - Matić, Ivana Z.
AU  - Stanojković, Tatjana P.
AU  - Mijin, Dušan
AU  - Panić, Vesna V.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5136
AB  - Researchers are faced with everyday demands for safer and more efficient therapy for many diseases, especially serious one such as various types of cancer. Numerous anticancer drugs are poorly-water soluble and therefore their encapsulation and controlled release remain quite challenge. In present study, we deepened our research of hydrophilic carrier based on poly(methacrylic acid) and casein (PMAC) by investigating its potential for encapsulation and controlled release of novel poorly water-soluble dihydropyrimidion-azo-pyridon compound (DHPMP). DHPMP is a dye that has been proven to show cytotoxic activity against chronic myeloid leukemia K562 cells. By encapsulating DHPMP into the carrier and delivering it into the intestines, DHPMP absorption could be the fastest and the number of therapeutic doses and side effects can be reduced. Carriers based on PMAC and DHPMP (PMAC-DHPMP) were synthetized and characterized by FTIR, SEM and single compression tests. The swelling behavior of PMAC-DHPMP carriers and cumulative DHPMP release were investigated depending on the amount of crosslinker and encapsulated DHPMP in two media which were simulating pH environments in human stomach and intestines. The prolonged and controlled release of DHPMP was achieved. In vitro cytotoxic activity of PMAC-DHPMP carriers against K562 cells and the cell cycle analysis showed great potential of the carriers for application in leukemia treatment.
PB  - John Wiley and Sons Inc
T2  - Journal of Biomedical Materials Research - Part A
T1  - Soft 3D hybrid network for delivery and controlled release of poorly soluble dihydropyrimidinone compound: An insight into the novel system for potential application in leukemia treatment
DO  - 10.1002/jbm.a.37396
ER  - 

@article{
author = "Marković, Maja D. and Tadić, Julijana D. and Savić, Sanja I. and Matić, Ivana Z. and Stanojković, Tatjana P. and Mijin, Dušan and Panić, Vesna V.",
year = "2022",
abstract = "Researchers are faced with everyday demands for safer and more efficient therapy for many diseases, especially serious one such as various types of cancer. Numerous anticancer drugs are poorly-water soluble and therefore their encapsulation and controlled release remain quite challenge. In present study, we deepened our research of hydrophilic carrier based on poly(methacrylic acid) and casein (PMAC) by investigating its potential for encapsulation and controlled release of novel poorly water-soluble dihydropyrimidion-azo-pyridon compound (DHPMP). DHPMP is a dye that has been proven to show cytotoxic activity against chronic myeloid leukemia K562 cells. By encapsulating DHPMP into the carrier and delivering it into the intestines, DHPMP absorption could be the fastest and the number of therapeutic doses and side effects can be reduced. Carriers based on PMAC and DHPMP (PMAC-DHPMP) were synthetized and characterized by FTIR, SEM and single compression tests. The swelling behavior of PMAC-DHPMP carriers and cumulative DHPMP release were investigated depending on the amount of crosslinker and encapsulated DHPMP in two media which were simulating pH environments in human stomach and intestines. The prolonged and controlled release of DHPMP was achieved. In vitro cytotoxic activity of PMAC-DHPMP carriers against K562 cells and the cell cycle analysis showed great potential of the carriers for application in leukemia treatment.",
publisher = "John Wiley and Sons Inc",
journal = "Journal of Biomedical Materials Research - Part A",
title = "Soft 3D hybrid network for delivery and controlled release of poorly soluble dihydropyrimidinone compound: An insight into the novel system for potential application in leukemia treatment",
doi = "10.1002/jbm.a.37396"
}

Marković, M. D., Tadić, J. D., Savić, S. I., Matić, I. Z., Stanojković, T. P., Mijin, D.,& Panić, V. V.. (2022). Soft 3D hybrid network for delivery and controlled release of poorly soluble dihydropyrimidinone compound: An insight into the novel system for potential application in leukemia treatment. in Journal of Biomedical Materials Research - Part A
John Wiley and Sons Inc..
https://doi.org/10.1002/jbm.a.37396

Marković MD, Tadić JD, Savić SI, Matić IZ, Stanojković TP, Mijin D, Panić VV. Soft 3D hybrid network for delivery and controlled release of poorly soluble dihydropyrimidinone compound: An insight into the novel system for potential application in leukemia treatment. in Journal of Biomedical Materials Research - Part A. 2022;.
doi:10.1002/jbm.a.37396 .

Marković, Maja D., Tadić, Julijana D., Savić, Sanja I., Matić, Ivana Z., Stanojković, Tatjana P., Mijin, Dušan, Panić, Vesna V., "Soft 3D hybrid network for delivery and controlled release of poorly soluble dihydropyrimidinone compound: An insight into the novel system for potential application in leukemia treatment" in Journal of Biomedical Materials Research - Part A (2022),
https://doi.org/10.1002/jbm.a.37396 . .

TY  - CONF
AU  - Pantić, Olga J.
AU  - Spasojević, Pavle M.
AU  - Panić, Vesna V.
AU  - Marković, Maja D.
AU  - Savić, Sanja I.
AU  - Kalagasidis Krušić, Melina T.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5159
AB  - Pectin and pectin derived oligosaccharides can be obtained from waste apple pomace
(biomass). Traditional method for pectin extraction involves use of diluted mineral acids at
elevated temperatures, with yields of about 10 to 15%. As an alternative to conventional
methods, the use of eutectic solvents is increasing because of their superior properties
when it comes to targeted extraction of certain components from biomass. The aim of this
paper is ultrasound assisted extraction of pectin from waste apple pomace using choline
chloride based eutectic solvents and lactic acid. Properties of extracted products were
examined using FTIR spectroscopy and differential scanning calorimetry.
PB  - Serbian Chemical Society
C3  - 58th Meeting of the Serbian Chemical Society
T1  - Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5159
ER  - 

@conference{
author = "Pantić, Olga J. and Spasojević, Pavle M. and Panić, Vesna V. and Marković, Maja D. and Savić, Sanja I. and Kalagasidis Krušić, Melina T.",
year = "2022",
abstract = "Pectin and pectin derived oligosaccharides can be obtained from waste apple pomace
(biomass). Traditional method for pectin extraction involves use of diluted mineral acids at
elevated temperatures, with yields of about 10 to 15%. As an alternative to conventional
methods, the use of eutectic solvents is increasing because of their superior properties
when it comes to targeted extraction of certain components from biomass. The aim of this
paper is ultrasound assisted extraction of pectin from waste apple pomace using choline
chloride based eutectic solvents and lactic acid. Properties of extracted products were
examined using FTIR spectroscopy and differential scanning calorimetry.",
publisher = "Serbian Chemical Society",
journal = "58th Meeting of the Serbian Chemical Society",
title = "Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5159"
}

Pantić, O. J., Spasojević, P. M., Panić, V. V., Marković, M. D., Savić, S. I.,& Kalagasidis Krušić, M. T.. (2022). Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents. in 58th Meeting of the Serbian Chemical Society
Serbian Chemical Society..
https://hdl.handle.net/21.15107/rcub_technorep_5159

Pantić OJ, Spasojević PM, Panić VV, Marković MD, Savić SI, Kalagasidis Krušić MT. Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents. in 58th Meeting of the Serbian Chemical Society. 2022;.
https://hdl.handle.net/21.15107/rcub_technorep_5159 .

Pantić, Olga J., Spasojević, Pavle M., Panić, Vesna V., Marković, Maja D., Savić, Sanja I., Kalagasidis Krušić, Melina T., "Ultrasound assisted extraction of pectin from waste apple pomace using choline chloride based eutectic solvents" in 58th Meeting of the Serbian Chemical Society (2022),
https://hdl.handle.net/21.15107/rcub_technorep_5159 .

TY  - CONF
AU  - Pantić, Olga J.
AU  - Spasojević, Pavle M.
AU  - Marković, Maja D.
AU  - Savić, Sanja I.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5229
AB  - Processing of waste by-products of agricultural origin generated by different kinds of
industries can entail environmental problems. Waste apple pomace (biomass) could play
an important role in pectin production, offering economic advantages and decreasing the
environmental impact. Pectin and pectin derived oligosaccharides have many
applications in food and pharmaceutical products as gelling agents and stabilizers.
Traditional method for pectin extraction involved the use of diluted mineral acids at
elevated temperatures, with yields of about 10 to 15%. Because of the relatively long
period of exposure to direct heating, thermal degradation of pectin often occurs in this
process. The use of deep eutectic solvents could be the solution to this problem. Deep
eutectic solvents have shown superior properties when it comes to targeted extraction of
certain components from biomass, while providing mild conditions when compared to
conventional methods. The aim of this paper is thermal extraction of pectin from waste
apple pomace using choline chloride based deep eutectic solvents combined with
different acids (oxalic acid, lactic acid and malic acid). Properties of extracted products
were examined using FTIR spectroscopy and differential scanning calorimetry.
PB  - Serbian Chemical Society and Serbian Young Chemists’ Club, Belgrade, Serbia
C3  - 8th Conference of Young Chemists of Serbia Book of Abstract
T1  - Thermal extraction of pectin from waste apple pomace using choline chloride based eutectic solvents
SP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5229
ER  - 

@conference{
author = "Pantić, Olga J. and Spasojević, Pavle M. and Marković, Maja D. and Savić, Sanja I.",
year = "2022",
abstract = "Processing of waste by-products of agricultural origin generated by different kinds of
industries can entail environmental problems. Waste apple pomace (biomass) could play
an important role in pectin production, offering economic advantages and decreasing the
environmental impact. Pectin and pectin derived oligosaccharides have many
applications in food and pharmaceutical products as gelling agents and stabilizers.
Traditional method for pectin extraction involved the use of diluted mineral acids at
elevated temperatures, with yields of about 10 to 15%. Because of the relatively long
period of exposure to direct heating, thermal degradation of pectin often occurs in this
process. The use of deep eutectic solvents could be the solution to this problem. Deep
eutectic solvents have shown superior properties when it comes to targeted extraction of
certain components from biomass, while providing mild conditions when compared to
conventional methods. The aim of this paper is thermal extraction of pectin from waste
apple pomace using choline chloride based deep eutectic solvents combined with
different acids (oxalic acid, lactic acid and malic acid). Properties of extracted products
were examined using FTIR spectroscopy and differential scanning calorimetry.",
publisher = "Serbian Chemical Society and Serbian Young Chemists’ Club, Belgrade, Serbia",
journal = "8th Conference of Young Chemists of Serbia Book of Abstract",
title = "Thermal extraction of pectin from waste apple pomace using choline chloride based eutectic solvents",
pages = "66",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5229"
}

Pantić, O. J., Spasojević, P. M., Marković, M. D.,& Savić, S. I.. (2022). Thermal extraction of pectin from waste apple pomace using choline chloride based eutectic solvents. in 8th Conference of Young Chemists of Serbia Book of Abstract
Serbian Chemical Society and Serbian Young Chemists’ Club, Belgrade, Serbia., 66.
https://hdl.handle.net/21.15107/rcub_technorep_5229

Pantić OJ, Spasojević PM, Marković MD, Savić SI. Thermal extraction of pectin from waste apple pomace using choline chloride based eutectic solvents. in 8th Conference of Young Chemists of Serbia Book of Abstract. 2022;:66.
https://hdl.handle.net/21.15107/rcub_technorep_5229 .

Pantić, Olga J., Spasojević, Pavle M., Marković, Maja D., Savić, Sanja I., "Thermal extraction of pectin from waste apple pomace using choline chloride based eutectic solvents" in 8th Conference of Young Chemists of Serbia Book of Abstract (2022):66,
https://hdl.handle.net/21.15107/rcub_technorep_5229 .

TY  - CONF
AU  - Pantić, Olga
AU  - Panić, Vesna
AU  - Savić, Sanja
AU  - Marković, Maja
AU  - Kalagasidis Krušić, Melina
AU  - Spasojević, Pavle
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5234
AB  - Replacing styrene with biobased monomers to produce fully biobased unsaturated polyester
resins (UPRs) turned out to be quite a challenging task. Styrene has been recognized as a hazardous
and a potentially carcinogenic substance for human health. Using dimethyl itaconate as an alternative reactive diluent to styrene, which can be obtained from renewable resources, enables low viscosity for easy manipulation of mentioned UPRs. Fully biobased UPRs in question were based on itaconic acid, succinic acid, and propylene glycol, which were then diluted with dimethyl itaconate.
Having in mind that UPRs can be used as a matrix for composite materials, this paper examines the
effect of different weight ratios of spent coffee grounds as a filler. To determine the application of
thus obtained composite materials, characterization consisted of examining mechanical properties
based on viscosity measurements, uniaxial stretching experiments, FTIR spectroscopy and gel content analysis.
PB  - Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) Društvo za procesnu tehniku, Beograd, Srbija
C3  - The 35rd International Congress on Processing Industry, Belgrade, Serbia
T1  - BIOBASED COMPOSITE MATERIALS OBTAINED FROM UNSATURATED POLYESTER RESINS AND WASTE COFFEE
DO  - 10.24094/ptk.022.041
ER  - 

@conference{
author = "Pantić, Olga and Panić, Vesna and Savić, Sanja and Marković, Maja and Kalagasidis Krušić, Melina and Spasojević, Pavle",
year = "2022",
abstract = "Replacing styrene with biobased monomers to produce fully biobased unsaturated polyester
resins (UPRs) turned out to be quite a challenging task. Styrene has been recognized as a hazardous
and a potentially carcinogenic substance for human health. Using dimethyl itaconate as an alternative reactive diluent to styrene, which can be obtained from renewable resources, enables low viscosity for easy manipulation of mentioned UPRs. Fully biobased UPRs in question were based on itaconic acid, succinic acid, and propylene glycol, which were then diluted with dimethyl itaconate.
Having in mind that UPRs can be used as a matrix for composite materials, this paper examines the
effect of different weight ratios of spent coffee grounds as a filler. To determine the application of
thus obtained composite materials, characterization consisted of examining mechanical properties
based on viscosity measurements, uniaxial stretching experiments, FTIR spectroscopy and gel content analysis.",
publisher = "Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) Društvo za procesnu tehniku, Beograd, Srbija",
journal = "The 35rd International Congress on Processing Industry, Belgrade, Serbia",
title = "BIOBASED COMPOSITE MATERIALS OBTAINED FROM UNSATURATED POLYESTER RESINS AND WASTE COFFEE",
doi = "10.24094/ptk.022.041"
}

Pantić, O., Panić, V., Savić, S., Marković, M., Kalagasidis Krušić, M.,& Spasojević, P.. (2022). BIOBASED COMPOSITE MATERIALS OBTAINED FROM UNSATURATED POLYESTER RESINS AND WASTE COFFEE. in The 35rd International Congress on Processing Industry, Belgrade, Serbia
Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) Društvo za procesnu tehniku, Beograd, Srbija..
https://doi.org/10.24094/ptk.022.041

Pantić O, Panić V, Savić S, Marković M, Kalagasidis Krušić M, Spasojević P. BIOBASED COMPOSITE MATERIALS OBTAINED FROM UNSATURATED POLYESTER RESINS AND WASTE COFFEE. in The 35rd International Congress on Processing Industry, Belgrade, Serbia. 2022;.
doi:10.24094/ptk.022.041 .

Pantić, Olga, Panić, Vesna, Savić, Sanja, Marković, Maja, Kalagasidis Krušić, Melina, Spasojević, Pavle, "BIOBASED COMPOSITE MATERIALS OBTAINED FROM UNSATURATED POLYESTER RESINS AND WASTE COFFEE" in The 35rd International Congress on Processing Industry, Belgrade, Serbia (2022),
https://doi.org/10.24094/ptk.022.041 . .

TY  - CONF
AU  - Pantić, Olga
AU  - Panić, Vesna
AU  - Savić, Sanja
AU  - Marković, Maja
AU  - Kalagasidis Krušić, Melina
AU  - Spasojević, Pavle
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6863
AB  - Using natural fillers can provide several benefits as they are abundant, low cost, and non-toxic. In
this paper two different natural fillers were examined, rosehip seed flour and hemp fibres, both of
which were varied in weight ratios. A highly biobased unsaturated polyester resin was synthesized as
a matrix. Characterization of thus obtained composite materials consisted of examining mechanical
properties by uniaxial tensile test, FTIR spectroscopy and gel content analysis.
PB  - Banja Luka : University in Banjaluka, Faculty of Technology
C3  - Book of proceedings / International scientific conference, XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, October 21-22, 2022, Banja Luka
T1  - BIOBASED UNSATURATED POLYESTER RESINS REINFORCED WITH NATURAL FILLERS
EP  - 55
SP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6863
ER  - 

@conference{
author = "Pantić, Olga and Panić, Vesna and Savić, Sanja and Marković, Maja and Kalagasidis Krušić, Melina and Spasojević, Pavle",
year = "2022",
abstract = "Using natural fillers can provide several benefits as they are abundant, low cost, and non-toxic. In
this paper two different natural fillers were examined, rosehip seed flour and hemp fibres, both of
which were varied in weight ratios. A highly biobased unsaturated polyester resin was synthesized as
a matrix. Characterization of thus obtained composite materials consisted of examining mechanical
properties by uniaxial tensile test, FTIR spectroscopy and gel content analysis.",
publisher = "Banja Luka : University in Banjaluka, Faculty of Technology",
journal = "Book of proceedings / International scientific conference, XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, October 21-22, 2022, Banja Luka",
title = "BIOBASED UNSATURATED POLYESTER RESINS REINFORCED WITH NATURAL FILLERS",
pages = "55-51",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6863"
}

Pantić, O., Panić, V., Savić, S., Marković, M., Kalagasidis Krušić, M.,& Spasojević, P.. (2022). BIOBASED UNSATURATED POLYESTER RESINS REINFORCED WITH NATURAL FILLERS. in Book of proceedings / International scientific conference, XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, October 21-22, 2022, Banja Luka
Banja Luka : University in Banjaluka, Faculty of Technology., 51-55.
https://hdl.handle.net/21.15107/rcub_technorep_6863

Pantić O, Panić V, Savić S, Marković M, Kalagasidis Krušić M, Spasojević P. BIOBASED UNSATURATED POLYESTER RESINS REINFORCED WITH NATURAL FILLERS. in Book of proceedings / International scientific conference, XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, October 21-22, 2022, Banja Luka. 2022;:51-55.
https://hdl.handle.net/21.15107/rcub_technorep_6863 .

Pantić, Olga, Panić, Vesna, Savić, Sanja, Marković, Maja, Kalagasidis Krušić, Melina, Spasojević, Pavle, "BIOBASED UNSATURATED POLYESTER RESINS REINFORCED WITH NATURAL FILLERS" in Book of proceedings / International scientific conference, XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, October 21-22, 2022, Banja Luka (2022):51-55,
https://hdl.handle.net/21.15107/rcub_technorep_6863 .