TY  - JOUR
AU  - Kovačević, Tihomir
AU  - Brzić, Saša
AU  - Kalagasidis Krušić, Melina
AU  - Nešić, Jovica
AU  - Radović, Ljubica
AU  - Dojčinović, Marina
AU  - Rusmirović, Jelena
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4851
AB  - Two types of polymer waste materials, poly(ethylene terephthalate) (PET) and polycarbonate based Colombian Resin (CR-39), were used for the designing of fully recycled composite materials. Waste PET was employed for the synthesis of thermoset unsaturated polyester resin (UPR), while CR-39 was used as reinforcement in the UPR matrix. Prior to mixing, CR-39 particles were subjected to oxidation and chemical activation using acids/base and ethanol amine, respectively. The effect of the modifier type and variable loading of the activated CR-39 particles on mechanical and dynamic-mechanical properties of the corresponding composites was investigated. The greatest improvement in the tensile and flexural strength of UPR resin was achieved with the composite containing 0.5 wt% of amine activated filler particles, 96.0% and 62.2%, respectively. The Arrhenius equation was used to calculate the activation energy for glass transition from dynamic mechanical properties measured at various frequencies. The activation energy of the main transition for UPR resin and composites were calculated to be 173 and 350 kJ center dot mol(-1) indicating that reinforcement results in an increase in the energy barrier to macromolecules viscoelastic relaxation. In addition, erosion resistance was studied during exposure of samples to cavitation tests. According to the obtained results, these materials can be applied in construction and mining industry.
PB  - SAGE Publications Ltd.
T2  - Journal of Composite Materials
T1  - Reuse potential of functionalized thermoplastic waste as reinforcement for thermoset polymers: Mechanical properties and erosion resistance
EP  - 4220
IS  - 28
SP  - 4207
VL  - 55
DO  - 10.1177/00219983211037045
ER  - 

@article{
author = "Kovačević, Tihomir and Brzić, Saša and Kalagasidis Krušić, Melina and Nešić, Jovica and Radović, Ljubica and Dojčinović, Marina and Rusmirović, Jelena",
year = "2021",
abstract = "Two types of polymer waste materials, poly(ethylene terephthalate) (PET) and polycarbonate based Colombian Resin (CR-39), were used for the designing of fully recycled composite materials. Waste PET was employed for the synthesis of thermoset unsaturated polyester resin (UPR), while CR-39 was used as reinforcement in the UPR matrix. Prior to mixing, CR-39 particles were subjected to oxidation and chemical activation using acids/base and ethanol amine, respectively. The effect of the modifier type and variable loading of the activated CR-39 particles on mechanical and dynamic-mechanical properties of the corresponding composites was investigated. The greatest improvement in the tensile and flexural strength of UPR resin was achieved with the composite containing 0.5 wt% of amine activated filler particles, 96.0% and 62.2%, respectively. The Arrhenius equation was used to calculate the activation energy for glass transition from dynamic mechanical properties measured at various frequencies. The activation energy of the main transition for UPR resin and composites were calculated to be 173 and 350 kJ center dot mol(-1) indicating that reinforcement results in an increase in the energy barrier to macromolecules viscoelastic relaxation. In addition, erosion resistance was studied during exposure of samples to cavitation tests. According to the obtained results, these materials can be applied in construction and mining industry.",
publisher = "SAGE Publications Ltd.",
journal = "Journal of Composite Materials",
title = "Reuse potential of functionalized thermoplastic waste as reinforcement for thermoset polymers: Mechanical properties and erosion resistance",
pages = "4220-4207",
number = "28",
volume = "55",
doi = "10.1177/00219983211037045"
}

Kovačević, T., Brzić, S., Kalagasidis Krušić, M., Nešić, J., Radović, L., Dojčinović, M.,& Rusmirović, J.. (2021). Reuse potential of functionalized thermoplastic waste as reinforcement for thermoset polymers: Mechanical properties and erosion resistance. in Journal of Composite Materials
SAGE Publications Ltd.., 55(28), 4207-4220.
https://doi.org/10.1177/00219983211037045

Kovačević T, Brzić S, Kalagasidis Krušić M, Nešić J, Radović L, Dojčinović M, Rusmirović J. Reuse potential of functionalized thermoplastic waste as reinforcement for thermoset polymers: Mechanical properties and erosion resistance. in Journal of Composite Materials. 2021;55(28):4207-4220.
doi:10.1177/00219983211037045 .

Kovačević, Tihomir, Brzić, Saša, Kalagasidis Krušić, Melina, Nešić, Jovica, Radović, Ljubica, Dojčinović, Marina, Rusmirović, Jelena, "Reuse potential of functionalized thermoplastic waste as reinforcement for thermoset polymers: Mechanical properties and erosion resistance" in Journal of Composite Materials, 55, no. 28 (2021):4207-4220,
https://doi.org/10.1177/00219983211037045 . .

TY  - JOUR
AU  - Popović, Ana L.
AU  - Rusmirovic, Jelena D.
AU  - Veličković, Zlate
AU  - Kovacevic, Tihomir
AU  - Jovanovic, Aleksandar
AU  - Cvijetić, Ilija
AU  - Marinković, Aleksandar
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4967
AB  - In-depth kinetic and column adsorption study for diclofenac, DCF, heavy-metal and oxyanions adsorption on highly effective amino-functionalized lignin-based microsphere adsorbent (A-LMS) is examined. The A-LMS was synthesized via inverse suspension copolymerization of industrial kraft lignin with the amino containing grafting-agent (polyethylene imine), and an epoxy chloropropane cross-linker. The batch adsorption results indicated process spontaneity and feasibility of a high removal capacity: DCF(151.13) >>Cd2+(74.84)>Cr(VI)(54.20)>As(V)(53.12)>Ni2+(49.42 mg g(-1)). The quantum chemical calculated interaction energies reveal stabilization of the A-LMS/DCF complex through the electrostatics and van der Waals interactions. The results from the pseudo-second order and Weber-Morris fitting indicate a fast removal rate; thus, column tests were undertaken. The single resistance mass transfer model, i.e. the mass transfer (kfa) and diffusion coefficient (Deff), shows pore diffusional transport as a rate limiting step. The fitting of the fixed bed column data with empirical models demonstrates the influences of flow rate and adsorbate inlet concentration on the breakthrough behavior. Pore surface diffusion modeling (PSDM) expresses mass transport under applied hydraulic loading rates, calculated breakthrough point adsorption capacities: Cd2+(58.1)>Cr(VI)(54.1)>As(V)(50.9)>>Ni2+(42.9 mg g(-1))), without performing the experimentation on a full pilot-scale level, further confirms the high applicability of the A-LMS biobased adsorbent.
T2  - Journal of Industrial and Engineering Chemistry
T1  - Kinetics and column adsorption study of diclofenac and heavy-metal ions removal by amino-functionalized lignin microspheres
EP  - 314
SP  - 302
VL  - 93
DO  - 10.1016/j.jiec.2020.10.006
ER  - 

@article{
author = "Popović, Ana L. and Rusmirovic, Jelena D. and Veličković, Zlate and Kovacevic, Tihomir and Jovanovic, Aleksandar and Cvijetić, Ilija and Marinković, Aleksandar",
year = "2021",
abstract = "In-depth kinetic and column adsorption study for diclofenac, DCF, heavy-metal and oxyanions adsorption on highly effective amino-functionalized lignin-based microsphere adsorbent (A-LMS) is examined. The A-LMS was synthesized via inverse suspension copolymerization of industrial kraft lignin with the amino containing grafting-agent (polyethylene imine), and an epoxy chloropropane cross-linker. The batch adsorption results indicated process spontaneity and feasibility of a high removal capacity: DCF(151.13) >>Cd2+(74.84)>Cr(VI)(54.20)>As(V)(53.12)>Ni2+(49.42 mg g(-1)). The quantum chemical calculated interaction energies reveal stabilization of the A-LMS/DCF complex through the electrostatics and van der Waals interactions. The results from the pseudo-second order and Weber-Morris fitting indicate a fast removal rate; thus, column tests were undertaken. The single resistance mass transfer model, i.e. the mass transfer (kfa) and diffusion coefficient (Deff), shows pore diffusional transport as a rate limiting step. The fitting of the fixed bed column data with empirical models demonstrates the influences of flow rate and adsorbate inlet concentration on the breakthrough behavior. Pore surface diffusion modeling (PSDM) expresses mass transport under applied hydraulic loading rates, calculated breakthrough point adsorption capacities: Cd2+(58.1)>Cr(VI)(54.1)>As(V)(50.9)>>Ni2+(42.9 mg g(-1))), without performing the experimentation on a full pilot-scale level, further confirms the high applicability of the A-LMS biobased adsorbent.",
journal = "Journal of Industrial and Engineering Chemistry",
title = "Kinetics and column adsorption study of diclofenac and heavy-metal ions removal by amino-functionalized lignin microspheres",
pages = "314-302",
volume = "93",
doi = "10.1016/j.jiec.2020.10.006"
}

Popović, A. L., Rusmirovic, J. D., Veličković, Z., Kovacevic, T., Jovanovic, A., Cvijetić, I.,& Marinković, A.. (2021). Kinetics and column adsorption study of diclofenac and heavy-metal ions removal by amino-functionalized lignin microspheres. in Journal of Industrial and Engineering Chemistry, 93, 302-314.
https://doi.org/10.1016/j.jiec.2020.10.006

Popović AL, Rusmirovic JD, Veličković Z, Kovacevic T, Jovanovic A, Cvijetić I, Marinković A. Kinetics and column adsorption study of diclofenac and heavy-metal ions removal by amino-functionalized lignin microspheres. in Journal of Industrial and Engineering Chemistry. 2021;93:302-314.
doi:10.1016/j.jiec.2020.10.006 .

Popović, Ana L., Rusmirovic, Jelena D., Veličković, Zlate, Kovacevic, Tihomir, Jovanovic, Aleksandar, Cvijetić, Ilija, Marinković, Aleksandar, "Kinetics and column adsorption study of diclofenac and heavy-metal ions removal by amino-functionalized lignin microspheres" in Journal of Industrial and Engineering Chemistry, 93 (2021):302-314,
https://doi.org/10.1016/j.jiec.2020.10.006 . .