TY  - CONF
AU  - Marković, Bojana
AU  - Stefanović, Ivan
AU  - Tadić, Tamara
AU  - Sandić, Zvjezdana
AU  - Bulatović, Sandra
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7053
AB  - Hexavalent chromium, Cr(VI), is one of the most notorious pollutants with
health and environmental impacts due to carcinogenic, teratogenic, and mutagenic
effects on the human organism.1 Therefore, treating wastewater containing Cr(VI)
before discharge into the aquatic system is extremely necessary. In this study, the
nonlinear regression method was used to determine the kinetic and isotherm
parameters for Cr(VI) sorption from aqueous solution on hexamethylene diaminemodified 177btain177177ous copolymer based on glycidyl methacrylate (PGEHMD).2 The Avrami kinetic model provides the best correlation of the experimental
data with R
2 = 0.994 and χ
2 = 0.004, while the Freundlich isotherm model best
described the Cr(VI) sorption onto PGE-HMD copolymer indicating a heterogenous
sorption process.
PB  - Skopje : Society of chemists and technologists of Macedonia
C3  - Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia
T1  - Kinetic and Isotherm Non-Linear Study of Cr(VI) Sorption onto Amino-Modified Macroporous GMA Based Copolymer
SP  - 177
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7053
ER  - 

@conference{
author = "Marković, Bojana and Stefanović, Ivan and Tadić, Tamara and Sandić, Zvjezdana and Bulatović, Sandra and Nastasović, Aleksandra and Onjia, Antonije",
year = "2023",
abstract = "Hexavalent chromium, Cr(VI), is one of the most notorious pollutants with
health and environmental impacts due to carcinogenic, teratogenic, and mutagenic
effects on the human organism.1 Therefore, treating wastewater containing Cr(VI)
before discharge into the aquatic system is extremely necessary. In this study, the
nonlinear regression method was used to determine the kinetic and isotherm
parameters for Cr(VI) sorption from aqueous solution on hexamethylene diaminemodified 177btain177177ous copolymer based on glycidyl methacrylate (PGEHMD).2 The Avrami kinetic model provides the best correlation of the experimental
data with R
2 = 0.994 and χ
2 = 0.004, while the Freundlich isotherm model best
described the Cr(VI) sorption onto PGE-HMD copolymer indicating a heterogenous
sorption process.",
publisher = "Skopje : Society of chemists and technologists of Macedonia",
journal = "Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia",
title = "Kinetic and Isotherm Non-Linear Study of Cr(VI) Sorption onto Amino-Modified Macroporous GMA Based Copolymer",
pages = "177",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7053"
}

Marković, B., Stefanović, I., Tadić, T., Sandić, Z., Bulatović, S., Nastasović, A.,& Onjia, A.. (2023). Kinetic and Isotherm Non-Linear Study of Cr(VI) Sorption onto Amino-Modified Macroporous GMA Based Copolymer. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia
Skopje : Society of chemists and technologists of Macedonia., 177.
https://hdl.handle.net/21.15107/rcub_technorep_7053

Marković B, Stefanović I, Tadić T, Sandić Z, Bulatović S, Nastasović A, Onjia A. Kinetic and Isotherm Non-Linear Study of Cr(VI) Sorption onto Amino-Modified Macroporous GMA Based Copolymer. in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia. 2023;:177.
https://hdl.handle.net/21.15107/rcub_technorep_7053 .

Marković, Bojana, Stefanović, Ivan, Tadić, Tamara, Sandić, Zvjezdana, Bulatović, Sandra, Nastasović, Aleksandra, Onjia, Antonije, "Kinetic and Isotherm Non-Linear Study of Cr(VI) Sorption onto Amino-Modified Macroporous GMA Based Copolymer" in Book of abstracts / 26th Congress of SCTM with international participation 20–23 September 2023 Metropol Lake Resort Ohrid, R. Macedonia (2023):177,
https://hdl.handle.net/21.15107/rcub_technorep_7053 .

TY  - CONF
AU  - Tadić, Tamara T.
AU  - Marković, Bojana M.
AU  - Stefanović, Ivan S.
AU  - Džunuzović, Jasna V.
AU  - Sandić, Zvjezdana P.
AU  - Suručić, Ljiljana T.
AU  - Onjia, Antonije E.
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7092
AB  - A new metal-chelating glycidyl methacrylate based macroporous copolymer with
ethylenediaminetetraacetic acid functions was tested as a potential Cu(II) and Pb(II) ions sorbent from
aqueous solutions. The sorption was studied in non-competitive batch experiments, by varying initial
pH and metal concentration, contact time and temperature. Pseudo-first and pseudo-second order
model, as well as Bangham, intra-particle and liquid film diffusion models were used to determine
the nature of sorption kinetics and the rate of limiting step. Equilibrium sorption data were analyzed
with Langmuir, Freundlich, Temkin and Elovich isotherm models.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia
T1  - Investigation of sorption behavior of Cu(II) and Pb(II) onto a novеl EDTA modified copolymer
EP  - 508
SP  - 505
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7092
ER  - 

@conference{
author = "Tadić, Tamara T. and Marković, Bojana M. and Stefanović, Ivan S. and Džunuzović, Jasna V. and Sandić, Zvjezdana P. and Suručić, Ljiljana T. and Onjia, Antonije E.",
year = "2021",
abstract = "A new metal-chelating glycidyl methacrylate based macroporous copolymer with
ethylenediaminetetraacetic acid functions was tested as a potential Cu(II) and Pb(II) ions sorbent from
aqueous solutions. The sorption was studied in non-competitive batch experiments, by varying initial
pH and metal concentration, contact time and temperature. Pseudo-first and pseudo-second order
model, as well as Bangham, intra-particle and liquid film diffusion models were used to determine
the nature of sorption kinetics and the rate of limiting step. Equilibrium sorption data were analyzed
with Langmuir, Freundlich, Temkin and Elovich isotherm models.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia",
title = "Investigation of sorption behavior of Cu(II) and Pb(II) onto a novеl EDTA modified copolymer",
pages = "508-505",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7092"
}

Tadić, T. T., Marković, B. M., Stefanović, I. S., Džunuzović, J. V., Sandić, Z. P., Suručić, L. T.,& Onjia, A. E.. (2021). Investigation of sorption behavior of Cu(II) and Pb(II) onto a novеl EDTA modified copolymer. in Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia
Belgrade : Society of Physical Chemists of Serbia., 2, 505-508.
https://hdl.handle.net/21.15107/rcub_technorep_7092

Tadić TT, Marković BM, Stefanović IS, Džunuzović JV, Sandić ZP, Suručić LT, Onjia AE. Investigation of sorption behavior of Cu(II) and Pb(II) onto a novеl EDTA modified copolymer. in Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia. 2021;2:505-508.
https://hdl.handle.net/21.15107/rcub_technorep_7092 .

Tadić, Tamara T., Marković, Bojana M., Stefanović, Ivan S., Džunuzović, Jasna V., Sandić, Zvjezdana P., Suručić, Ljiljana T., Onjia, Antonije E., "Investigation of sorption behavior of Cu(II) and Pb(II) onto a novеl EDTA modified copolymer" in Proceedings / 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24, 2021, Belgrade, Serbia, 2 (2021):505-508,
https://hdl.handle.net/21.15107/rcub_technorep_7092 .

TY  - CONF
AU  - Marković, Bojana
AU  - Tadić, Tamara
AU  - Stefanović, Ivan
AU  - Suručić, Ljiljana T.
AU  - Sandić, Zvjezdana
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7089
AB  - Vanadium and its compounds have multiple applications in industry, such as in alloys to increase strength and as a catalyst. Vanadium(V) is the dominant form in the aquatic environment and also, it is the most hazardous product which can cause an environmental problem due to its high solubility and toxicity. The aim of this study was to investigate the possible use of a novel magnetic polymer/bentonite composite prepared by suspension copolymerization of glycidy. methacrylate (GMA) and ethylene alyco. dimethacrylate (EGDMA) and functionalize with ethylene diamine and hexamethylene diamine (MB-PSME-ED and MB-PGME-HD), for V(V) sorption from

aqueous solution. The influence of contact time on V(V) sorption onto MB-PGME-ED and MB-PGME-HD was investigated. All sorption experiments were performed in batch static conditions, at pH 7.6 and room temperature (298 K). Maximum sorption capacities, Qmax, were 2.47 mg/g and 1.94 mg/g for MB-PGME-ED and MB-PGME-HD, respectively. Surface-reaction (pseudo-first order, pseudo-second order and Elovich) and particle diffusion based (intra-particle diffusion, liquid film diffusivity model, Bangham, Boyd and McKay's) kinetic models were used for analysis of V(V) sorption kinetic data. Both sorbents obeyed the pseudo-second order kinetic model, with evident influence of pore diffusion. Desorption experiments of V(V) loaded MB-PGME-ED and MB-PGME HD performed with 0.1 M NaOH and 0.1 M HNO3 showed that NaCH is a better stripping agent for V(V) ion within both samples.
PB  - Leskovac : Faculty of Technology
C3  - Book of abstracts / 14th Symposium with International Participation "Novel Technologies and Economic Development" Leskovac, October, 22-23, 2021
T1  - Kinetic and desorption study of vanadium (V) on magnetic amino-functionalized polymer/bentonite sorbents
SP  - 109
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7089
ER  - 

@conference{
author = "Marković, Bojana and Tadić, Tamara and Stefanović, Ivan and Suručić, Ljiljana T. and Sandić, Zvjezdana and Nastasović, Aleksandra and Onjia, Antonije",
year = "2021",
abstract = "Vanadium and its compounds have multiple applications in industry, such as in alloys to increase strength and as a catalyst. Vanadium(V) is the dominant form in the aquatic environment and also, it is the most hazardous product which can cause an environmental problem due to its high solubility and toxicity. The aim of this study was to investigate the possible use of a novel magnetic polymer/bentonite composite prepared by suspension copolymerization of glycidy. methacrylate (GMA) and ethylene alyco. dimethacrylate (EGDMA) and functionalize with ethylene diamine and hexamethylene diamine (MB-PSME-ED and MB-PGME-HD), for V(V) sorption from

aqueous solution. The influence of contact time on V(V) sorption onto MB-PGME-ED and MB-PGME-HD was investigated. All sorption experiments were performed in batch static conditions, at pH 7.6 and room temperature (298 K). Maximum sorption capacities, Qmax, were 2.47 mg/g and 1.94 mg/g for MB-PGME-ED and MB-PGME-HD, respectively. Surface-reaction (pseudo-first order, pseudo-second order and Elovich) and particle diffusion based (intra-particle diffusion, liquid film diffusivity model, Bangham, Boyd and McKay's) kinetic models were used for analysis of V(V) sorption kinetic data. Both sorbents obeyed the pseudo-second order kinetic model, with evident influence of pore diffusion. Desorption experiments of V(V) loaded MB-PGME-ED and MB-PGME HD performed with 0.1 M NaOH and 0.1 M HNO3 showed that NaCH is a better stripping agent for V(V) ion within both samples.",
publisher = "Leskovac : Faculty of Technology",
journal = "Book of abstracts / 14th Symposium with International Participation "Novel Technologies and Economic Development" Leskovac, October, 22-23, 2021",
title = "Kinetic and desorption study of vanadium (V) on magnetic amino-functionalized polymer/bentonite sorbents",
pages = "109",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7089"
}

Marković, B., Tadić, T., Stefanović, I., Suručić, L. T., Sandić, Z., Nastasović, A.,& Onjia, A.. (2021). Kinetic and desorption study of vanadium (V) on magnetic amino-functionalized polymer/bentonite sorbents. in Book of abstracts / 14th Symposium with International Participation "Novel Technologies and Economic Development" Leskovac, October, 22-23, 2021
Leskovac : Faculty of Technology., 109.
https://hdl.handle.net/21.15107/rcub_technorep_7089

Marković B, Tadić T, Stefanović I, Suručić LT, Sandić Z, Nastasović A, Onjia A. Kinetic and desorption study of vanadium (V) on magnetic amino-functionalized polymer/bentonite sorbents. in Book of abstracts / 14th Symposium with International Participation "Novel Technologies and Economic Development" Leskovac, October, 22-23, 2021. 2021;:109.
https://hdl.handle.net/21.15107/rcub_technorep_7089 .

Marković, Bojana, Tadić, Tamara, Stefanović, Ivan, Suručić, Ljiljana T., Sandić, Zvjezdana, Nastasović, Aleksandra, Onjia, Antonije, "Kinetic and desorption study of vanadium (V) on magnetic amino-functionalized polymer/bentonite sorbents" in Book of abstracts / 14th Symposium with International Participation "Novel Technologies and Economic Development" Leskovac, October, 22-23, 2021 (2021):109,
https://hdl.handle.net/21.15107/rcub_technorep_7089 .

TY  - JOUR
AU  - Stefanović, Ivan
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
AU  - Dapčević, Aleksandra
AU  - Šešlija, Sanja
AU  - Balanč, Bojana
AU  - Dobrzyńska-Mizera, Monika
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4
AB  - This work was focused on the synthesis of polyurethane networks (PUNs) based on polycaprolactone (PCL) as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation and 4,4 '-diphenylmethane diisocyanate (MDI) as the parts of the hard segments (HS), by a two-step solution polymerization. In order to find the best ratio between HS and SS to achieve good thermal and mechanical properties, suitable hydrophobicity and morphology of the PUNs, various experimental analyses were conducted. The obtained results revealed that features of the PUNs highly depend on the PCL content. The increase in the PCL content leads to the increase in thermal stability, hydrophobicity and appearance of the microphase separation, but on the other side, it also leads to the decrease in storage modulus in the rubbery plateau, crosslinking density and glass transition temperatures of PUNs. This work shows that features of PUNs can be easily adjusted for a specific application by careful selection of the SS and HS ratio.
PB  - Springer, New York
T2  - Polymer Bulletin
T1  - Composition-property relationship of polyurethane networks based on polycaprolactone diol
EP  - 7128
SP  - 7103
VL  - 78
DO  - 10.1007/s00289-020-03473-0
ER  - 

@article{
author = "Stefanović, Ivan and Džunuzović, Jasna and Džunuzović, Enis and Dapčević, Aleksandra and Šešlija, Sanja and Balanč, Bojana and Dobrzyńska-Mizera, Monika",
year = "2021",
abstract = "This work was focused on the synthesis of polyurethane networks (PUNs) based on polycaprolactone (PCL) as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation and 4,4 '-diphenylmethane diisocyanate (MDI) as the parts of the hard segments (HS), by a two-step solution polymerization. In order to find the best ratio between HS and SS to achieve good thermal and mechanical properties, suitable hydrophobicity and morphology of the PUNs, various experimental analyses were conducted. The obtained results revealed that features of the PUNs highly depend on the PCL content. The increase in the PCL content leads to the increase in thermal stability, hydrophobicity and appearance of the microphase separation, but on the other side, it also leads to the decrease in storage modulus in the rubbery plateau, crosslinking density and glass transition temperatures of PUNs. This work shows that features of PUNs can be easily adjusted for a specific application by careful selection of the SS and HS ratio.",
publisher = "Springer, New York",
journal = "Polymer Bulletin",
title = "Composition-property relationship of polyurethane networks based on polycaprolactone diol",
pages = "7128-7103",
volume = "78",
doi = "10.1007/s00289-020-03473-0"
}

Stefanović, I., Džunuzović, J., Džunuzović, E., Dapčević, A., Šešlija, S., Balanč, B.,& Dobrzyńska-Mizera, M.. (2021). Composition-property relationship of polyurethane networks based on polycaprolactone diol. in Polymer Bulletin
Springer, New York., 78, 7103-7128.
https://doi.org/10.1007/s00289-020-03473-0

Stefanović I, Džunuzović J, Džunuzović E, Dapčević A, Šešlija S, Balanč B, Dobrzyńska-Mizera M. Composition-property relationship of polyurethane networks based on polycaprolactone diol. in Polymer Bulletin. 2021;78:7103-7128.
doi:10.1007/s00289-020-03473-0 .

Stefanović, Ivan, Džunuzović, Jasna, Džunuzović, Enis, Dapčević, Aleksandra, Šešlija, Sanja, Balanč, Bojana, Dobrzyńska-Mizera, Monika, "Composition-property relationship of polyurethane networks based on polycaprolactone diol" in Polymer Bulletin, 78 (2021):7103-7128,
https://doi.org/10.1007/s00289-020-03473-0 . .

TY  - JOUR
AU  - Džunuzović, Jasna
AU  - Stefanović, Ivan
AU  - Džunuzović, Enis
AU  - Dapčević, Aleksandra
AU  - Šešlija, Sanja
AU  - Balanč, Bojana
AU  - Lamae, Giuseppe C.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4118
AB  - A series of environmentally friendly polyurethane (PU) networks based on polycaprolactone as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation as crosslinking agent was prepared by a two-step polymerization in solution. The chemical structure of the PU networks was analyzed by Fourier transform infrared spectroscopy, while XRD analysis revealed that these samples are amorphous. Swelling measurements, water absorption study, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, mechanical tests and scanning electron microscope revealed that, swelling behavior, hydrophobicity, thermal and mechanical features and morphology of PU networks show clear dependence on polycaprolactone content. The increase of the SS content induced appearance of the microphase separated morphology, increase of thermal stability, elongation at break, hydrophobicity and swelling ability in tetrahydrofuran and toluene, but at the same time it is responsible for the decrease of crosslinking density, glass transition temperatures, rigidity, tensile strength and Young's modulus of PU networks. Scanning electron microscope images of the fracture surfaces of PU networks show that their surface is rough, irregular, with flake-like structure, where size of flakes increases with increasing SS content. These results indicate that by choosing adequate SS content, PU coatings with diverse features based on polycaprolactone and Boltorn (R) aliphatic hyperbranched polyester can be designed for appropriate and desired application.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation
VL  - 137
DO  - 10.1016/j.porgcoat.2019.105305
ER  - 

@article{
author = "Džunuzović, Jasna and Stefanović, Ivan and Džunuzović, Enis and Dapčević, Aleksandra and Šešlija, Sanja and Balanč, Bojana and Lamae, Giuseppe C.",
year = "2019",
abstract = "A series of environmentally friendly polyurethane (PU) networks based on polycaprolactone as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation as crosslinking agent was prepared by a two-step polymerization in solution. The chemical structure of the PU networks was analyzed by Fourier transform infrared spectroscopy, while XRD analysis revealed that these samples are amorphous. Swelling measurements, water absorption study, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, mechanical tests and scanning electron microscope revealed that, swelling behavior, hydrophobicity, thermal and mechanical features and morphology of PU networks show clear dependence on polycaprolactone content. The increase of the SS content induced appearance of the microphase separated morphology, increase of thermal stability, elongation at break, hydrophobicity and swelling ability in tetrahydrofuran and toluene, but at the same time it is responsible for the decrease of crosslinking density, glass transition temperatures, rigidity, tensile strength and Young's modulus of PU networks. Scanning electron microscope images of the fracture surfaces of PU networks show that their surface is rough, irregular, with flake-like structure, where size of flakes increases with increasing SS content. These results indicate that by choosing adequate SS content, PU coatings with diverse features based on polycaprolactone and Boltorn (R) aliphatic hyperbranched polyester can be designed for appropriate and desired application.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation",
volume = "137",
doi = "10.1016/j.porgcoat.2019.105305"
}

Džunuzović, J., Stefanović, I., Džunuzović, E., Dapčević, A., Šešlija, S., Balanč, B.,& Lamae, G. C.. (2019). Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 137.
https://doi.org/10.1016/j.porgcoat.2019.105305

Džunuzović J, Stefanović I, Džunuzović E, Dapčević A, Šešlija S, Balanč B, Lamae GC. Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation. in Progress in Organic Coatings. 2019;137.
doi:10.1016/j.porgcoat.2019.105305 .

Džunuzović, Jasna, Stefanović, Ivan, Džunuzović, Enis, Dapčević, Aleksandra, Šešlija, Sanja, Balanč, Bojana, Lamae, Giuseppe C., "Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation" in Progress in Organic Coatings, 137 (2019),
https://doi.org/10.1016/j.porgcoat.2019.105305 . .

TY  - CONF
AU  - Marković , Bojana M.
AU  - Stefanović, Ivan S.
AU  - Džunuzović, Jasna V.
AU  - Sandić, Zvjezdana P.
AU  - Suručić, Ljiljana T.
AU  - Onjia, Antonije E.
AU  - Nastasović, Aleksandra B.
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7108
AB  - Kinetics and thermodynamics of Mo(VI) and Re(VII) sorption onto amino
functionalized magnetic poly(glycidyl methacrylate-co-ethylene glycol
dimethacrylate) [mPGME-deta] at 298 K and pH=4.0 were investigated. It
was shown that Mo(VI) and Re(VII) sorption obeys the pseudo-second-order
model with evident influence of pore diffusion. The maximum sorption
capacity of 60 mg/g for Mo(VI) and 47 mg/g for Re(VII) were observed.
Thermodynamic studies implied an endothermic and spontaneous process in
nature.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2018 : proceedings. Vol. 2 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade
T1  - Kinetics and thermodynamics of Mo(VI) and Re(VII) sorption on amino-functionalized magnetic polymer
EP  - 756
SP  - 753
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7108
ER  - 

@conference{
author = "Marković , Bojana M. and Stefanović, Ivan S. and Džunuzović, Jasna V. and Sandić, Zvjezdana P. and Suručić, Ljiljana T. and Onjia, Antonije E. and Nastasović, Aleksandra B.",
year = "2018",
abstract = "Kinetics and thermodynamics of Mo(VI) and Re(VII) sorption onto amino
functionalized magnetic poly(glycidyl methacrylate-co-ethylene glycol
dimethacrylate) [mPGME-deta] at 298 K and pH=4.0 were investigated. It
was shown that Mo(VI) and Re(VII) sorption obeys the pseudo-second-order
model with evident influence of pore diffusion. The maximum sorption
capacity of 60 mg/g for Mo(VI) and 47 mg/g for Re(VII) were observed.
Thermodynamic studies implied an endothermic and spontaneous process in
nature.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2018 : proceedings. Vol. 2 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade",
title = "Kinetics and thermodynamics of Mo(VI) and Re(VII) sorption on amino-functionalized magnetic polymer",
pages = "756-753",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7108"
}

Marković , B. M., Stefanović, I. S., Džunuzović, J. V., Sandić, Z. P., Suručić, L. T., Onjia, A. E.,& Nastasović, A. B.. (2018). Kinetics and thermodynamics of Mo(VI) and Re(VII) sorption on amino-functionalized magnetic polymer. in Physical Chemistry 2018 : proceedings. Vol. 2 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade
Belgrade : Society of Physical Chemists of Serbia., 753-756.
https://hdl.handle.net/21.15107/rcub_technorep_7108

Marković  BM, Stefanović IS, Džunuzović JV, Sandić ZP, Suručić LT, Onjia AE, Nastasović AB. Kinetics and thermodynamics of Mo(VI) and Re(VII) sorption on amino-functionalized magnetic polymer. in Physical Chemistry 2018 : proceedings. Vol. 2 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade. 2018;:753-756.
https://hdl.handle.net/21.15107/rcub_technorep_7108 .

Marković , Bojana M., Stefanović, Ivan S., Džunuzović, Jasna V., Sandić, Zvjezdana P., Suručić, Ljiljana T., Onjia, Antonije E., Nastasović, Aleksandra B., "Kinetics and thermodynamics of Mo(VI) and Re(VII) sorption on amino-functionalized magnetic polymer" in Physical Chemistry 2018 : proceedings. Vol. 2 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018, Belgrade (2018):753-756,
https://hdl.handle.net/21.15107/rcub_technorep_7108 .

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Stefanović, Ivan
AU  - Hercigonja, Radmila
AU  - Pergal, Marija
AU  - Marković, Jelena P.
AU  - Onjia, Antonije
AU  - Nastasović, Aleksandra
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3753
AB  - Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed.
PB  - Wiley, Hoboken
T2  - Polymer International
T1  - Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions
EP  - 689
IS  - 5
SP  - 679
VL  - 66
DO  - 10.1002/pi.5306
ER  - 

@article{
author = "Marković, Bojana M. and Stefanović, Ivan and Hercigonja, Radmila and Pergal, Marija and Marković, Jelena P. and Onjia, Antonije and Nastasović, Aleksandra",
year = "2017",
abstract = "Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed.",
publisher = "Wiley, Hoboken",
journal = "Polymer International",
title = "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions",
pages = "689-679",
number = "5",
volume = "66",
doi = "10.1002/pi.5306"
}

Marković, B. M., Stefanović, I., Hercigonja, R., Pergal, M., Marković, J. P., Onjia, A.,& Nastasović, A.. (2017). Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International
Wiley, Hoboken., 66(5), 679-689.
https://doi.org/10.1002/pi.5306

Marković BM, Stefanović I, Hercigonja R, Pergal M, Marković JP, Onjia A, Nastasović A. Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International. 2017;66(5):679-689.
doi:10.1002/pi.5306 .

Marković, Bojana M., Stefanović, Ivan, Hercigonja, Radmila, Pergal, Marija, Marković, Jelena P., Onjia, Antonije, Nastasović, Aleksandra, "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions" in Polymer International, 66, no. 5 (2017):679-689,
https://doi.org/10.1002/pi.5306 . .

TY  - JOUR
AU  - Pergal, Marija
AU  - Stefanović, Ivan
AU  - Gođevac, Dejan
AU  - Antić, Vesna
AU  - Milačić, Vesna
AU  - Ostojić, Sanja
AU  - Rogan, Jelena
AU  - Đonlagić, Jasna
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2692
AB  - In this study, the synthesis, structure and physical properties of two series of thermoplastic polyurethanes based on hydroxypropyl-terminated poly(dimethylsiloxane) (HP-PDMS) or hydroxyethoxypropyl-terminated poly(dimethylsiloxane) (EO-PDMS) as soft segments, and 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol as hard segments were investigated. The polyurethanes were synthesized by two-step polyaddition in solution. The effects of the type and content of PDMS segments on the structure, thermal and surface properties of copolymers were studied by H-1-, C-13-nuclear magnetic resonance (NMR) spectroscopy and two-dimensional NMR spectroscopies (heteronuclear multiple bond correlation (HMBC) and rotating-frame nuclear Overhauser effect (ROESY)), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), wide-angle X-ray scattering (WAXS), scanning electron microscopy (SEM) and water contact angle and water absorption measurements. Thermal properties investigated by DSC indicated that the presence of soft PDMS segments lowers the glass transition and melting temperatures of the hard phase as well as the degree of crystallinity. SEM analysis of the copolymers with a lower soft segment content confirmed the presence of spherulite superstructures, which arise from the crystallization of the hard segments. When compared with polyurethanes prepared from HP-PDMS, the copolymers synthesized from EO-PDMS with the same content of the soft segments had a higher degree of crystallinity, better thermal stability and a less hydrophobic surface. The obtained results showed that the synthesized polyurethanes had good thermal and surface properties, which could be further modified by changing the type or content of the soft segments.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane)
EP  - +
IS  - 7
SP  - 843
VL  - 79
DO  - 10.2298/JSC130819149P
ER  - 

@article{
author = "Pergal, Marija and Stefanović, Ivan and Gođevac, Dejan and Antić, Vesna and Milačić, Vesna and Ostojić, Sanja and Rogan, Jelena and Đonlagić, Jasna",
year = "2014",
abstract = "In this study, the synthesis, structure and physical properties of two series of thermoplastic polyurethanes based on hydroxypropyl-terminated poly(dimethylsiloxane) (HP-PDMS) or hydroxyethoxypropyl-terminated poly(dimethylsiloxane) (EO-PDMS) as soft segments, and 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol as hard segments were investigated. The polyurethanes were synthesized by two-step polyaddition in solution. The effects of the type and content of PDMS segments on the structure, thermal and surface properties of copolymers were studied by H-1-, C-13-nuclear magnetic resonance (NMR) spectroscopy and two-dimensional NMR spectroscopies (heteronuclear multiple bond correlation (HMBC) and rotating-frame nuclear Overhauser effect (ROESY)), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), wide-angle X-ray scattering (WAXS), scanning electron microscopy (SEM) and water contact angle and water absorption measurements. Thermal properties investigated by DSC indicated that the presence of soft PDMS segments lowers the glass transition and melting temperatures of the hard phase as well as the degree of crystallinity. SEM analysis of the copolymers with a lower soft segment content confirmed the presence of spherulite superstructures, which arise from the crystallization of the hard segments. When compared with polyurethanes prepared from HP-PDMS, the copolymers synthesized from EO-PDMS with the same content of the soft segments had a higher degree of crystallinity, better thermal stability and a less hydrophobic surface. The obtained results showed that the synthesized polyurethanes had good thermal and surface properties, which could be further modified by changing the type or content of the soft segments.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane)",
pages = "+-843",
number = "7",
volume = "79",
doi = "10.2298/JSC130819149P"
}

Pergal, M., Stefanović, I., Gođevac, D., Antić, V., Milačić, V., Ostojić, S., Rogan, J.,& Đonlagić, J.. (2014). Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane). in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 79(7), 843-+.
https://doi.org/10.2298/JSC130819149P

Pergal M, Stefanović I, Gođevac D, Antić V, Milačić V, Ostojić S, Rogan J, Đonlagić J. Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane). in Journal of the Serbian Chemical Society. 2014;79(7):843-+.
doi:10.2298/JSC130819149P .

Pergal, Marija, Stefanović, Ivan, Gođevac, Dejan, Antić, Vesna, Milačić, Vesna, Ostojić, Sanja, Rogan, Jelena, Đonlagić, Jasna, "Structural, thermal and surface characterization of thermoplastic polyurethanes based on poly(dimethylsiloxane)" in Journal of the Serbian Chemical Society, 79, no. 7 (2014):843-+,
https://doi.org/10.2298/JSC130819149P . .