TY  - JOUR
AU  - Marković, Bojana M.
AU  - Spasojević, Vojislav
AU  - Dapčević, Aleksandra
AU  - Vuković, Zorica M.
AU  - Pavlović, Vladimir B.
AU  - Ranđelović, Danijela
AU  - Nastasović, Aleksandra
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4179
AB  - Magnetic and non-magnetic macroporous crosslinked copolymers of glycidyl methacrylate and trimethylolpropane trimethacrylate were prepared by suspension copolymerization and functionalized with diethylenetriamine. The samples were characterized by mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy analysis (FTIR-ATR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM) and SQUID magnetometry. The FTIR-ATR analysis of synthesized magnetic nanocomposites confirmed the presence of magnetite and successful aminofunctionalization. Non-functionalized and amino-functionalized nanocomposites exhibited superparamagnetic behavior at 300 K, with a saturation magnetization of 5.0 emu/g and 2.9 emu/g, respectively. TEM analysis of the magnetic nanocomposite has shown that magnetic nanoparticles were homogeneously dispersed in the polymer matrix. It was demonstrated that incorporation of magnetic nanoparticles enhanced the thermal stability of the magnetic nanocomposite in comparison to the initial non-magnetic macroporous copolymer.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Characterization of glycidyl methacrylate based magnetic nanocomposites
EP  - 35
IS  - 1
SP  - 25
VL  - 73
DO  - 10.2298/HEMIND181113006M
ER  - 

@article{
author = "Marković, Bojana M. and Spasojević, Vojislav and Dapčević, Aleksandra and Vuković, Zorica M. and Pavlović, Vladimir B. and Ranđelović, Danijela and Nastasović, Aleksandra",
year = "2019",
abstract = "Magnetic and non-magnetic macroporous crosslinked copolymers of glycidyl methacrylate and trimethylolpropane trimethacrylate were prepared by suspension copolymerization and functionalized with diethylenetriamine. The samples were characterized by mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy analysis (FTIR-ATR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), atomic force microscopy (AFM), transmission electron microscopy (TEM) and SQUID magnetometry. The FTIR-ATR analysis of synthesized magnetic nanocomposites confirmed the presence of magnetite and successful aminofunctionalization. Non-functionalized and amino-functionalized nanocomposites exhibited superparamagnetic behavior at 300 K, with a saturation magnetization of 5.0 emu/g and 2.9 emu/g, respectively. TEM analysis of the magnetic nanocomposite has shown that magnetic nanoparticles were homogeneously dispersed in the polymer matrix. It was demonstrated that incorporation of magnetic nanoparticles enhanced the thermal stability of the magnetic nanocomposite in comparison to the initial non-magnetic macroporous copolymer.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Characterization of glycidyl methacrylate based magnetic nanocomposites",
pages = "35-25",
number = "1",
volume = "73",
doi = "10.2298/HEMIND181113006M"
}

Marković, B. M., Spasojević, V., Dapčević, A., Vuković, Z. M., Pavlović, V. B., Ranđelović, D.,& Nastasović, A.. (2019). Characterization of glycidyl methacrylate based magnetic nanocomposites. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 73(1), 25-35.
https://doi.org/10.2298/HEMIND181113006M

Marković BM, Spasojević V, Dapčević A, Vuković ZM, Pavlović VB, Ranđelović D, Nastasović A. Characterization of glycidyl methacrylate based magnetic nanocomposites. in Hemijska industrija. 2019;73(1):25-35.
doi:10.2298/HEMIND181113006M .

Marković, Bojana M., Spasojević, Vojislav, Dapčević, Aleksandra, Vuković, Zorica M., Pavlović, Vladimir B., Ranđelović, Danijela, Nastasović, Aleksandra, "Characterization of glycidyl methacrylate based magnetic nanocomposites" in Hemijska industrija, 73, no. 1 (2019):25-35,
https://doi.org/10.2298/HEMIND181113006M . .

TY  - JOUR
AU  - Ahribesh, Aysha Ali
AU  - Lazarević, Slavica
AU  - Janković-Častvan, Ivona
AU  - Jokić, Bojan
AU  - Spasojević, Vojislav
AU  - Radetić, Tamara
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3667
AB  - The magnetic nanocomposites (MNCs), used as adsorbents for Cd2+ ions, were prepared by a co-precipitation method using both the untreated natural (SEP) and the partially acid-activated (ASEP) sepiolites as supports for magnetite. The synthesis conditions differed as follows: NaOH or NH3 was added in the SEP or the ASEP suspension before or after the addition of Fe3 and Fe2+. The SEP-based MNCs prepared using NaOH had a lower magnetization, but higher adsorption capacities than the MNCs synthesized using NH3. The order of the mixing of the reagents had a small influence on the properties of SEP-based MNCs, especially when NaOH was used for the synthesis. Due to acidity of the surface functional groups of the ASEP, the magnetic composite could be synthesized only when NH3 was added in the suspension of ASEP having Fe3+ and Fe2+ ions. Despite of the worse dispersibility of the magnetic particles, the adsorption capacityof the ASEP-based composite was higher than of the MNC with SEP prepared by the same procedure. All the MNCs showed a superparamagnetic behavior at room temperature and the adsorption capacities were higher than of pure compounds. The adsorption of Cd2+ on the composites was best fitted with the Sips model, which suggested the chemisorption on the heterogeneous surface at energetically non-uniform sites until a monolayer was formed.
PB  - Elsevier Science Bv, Amsterdam
T2  - Powder Technology
T1  - Influence of the synthesis parameters on the properties of the sepiolite-based magnetic adsorbents
EP  - 269
SP  - 260
VL  - 305
DO  - 10.1016/j.powtec.2016.09.086
ER  - 

@article{
author = "Ahribesh, Aysha Ali and Lazarević, Slavica and Janković-Častvan, Ivona and Jokić, Bojan and Spasojević, Vojislav and Radetić, Tamara and Janaćković, Đorđe and Petrović, Rada",
year = "2017",
abstract = "The magnetic nanocomposites (MNCs), used as adsorbents for Cd2+ ions, were prepared by a co-precipitation method using both the untreated natural (SEP) and the partially acid-activated (ASEP) sepiolites as supports for magnetite. The synthesis conditions differed as follows: NaOH or NH3 was added in the SEP or the ASEP suspension before or after the addition of Fe3 and Fe2+. The SEP-based MNCs prepared using NaOH had a lower magnetization, but higher adsorption capacities than the MNCs synthesized using NH3. The order of the mixing of the reagents had a small influence on the properties of SEP-based MNCs, especially when NaOH was used for the synthesis. Due to acidity of the surface functional groups of the ASEP, the magnetic composite could be synthesized only when NH3 was added in the suspension of ASEP having Fe3+ and Fe2+ ions. Despite of the worse dispersibility of the magnetic particles, the adsorption capacityof the ASEP-based composite was higher than of the MNC with SEP prepared by the same procedure. All the MNCs showed a superparamagnetic behavior at room temperature and the adsorption capacities were higher than of pure compounds. The adsorption of Cd2+ on the composites was best fitted with the Sips model, which suggested the chemisorption on the heterogeneous surface at energetically non-uniform sites until a monolayer was formed.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Powder Technology",
title = "Influence of the synthesis parameters on the properties of the sepiolite-based magnetic adsorbents",
pages = "269-260",
volume = "305",
doi = "10.1016/j.powtec.2016.09.086"
}

Ahribesh, A. A., Lazarević, S., Janković-Častvan, I., Jokić, B., Spasojević, V., Radetić, T., Janaćković, Đ.,& Petrović, R.. (2017). Influence of the synthesis parameters on the properties of the sepiolite-based magnetic adsorbents. in Powder Technology
Elsevier Science Bv, Amsterdam., 305, 260-269.
https://doi.org/10.1016/j.powtec.2016.09.086

Ahribesh AA, Lazarević S, Janković-Častvan I, Jokić B, Spasojević V, Radetić T, Janaćković Đ, Petrović R. Influence of the synthesis parameters on the properties of the sepiolite-based magnetic adsorbents. in Powder Technology. 2017;305:260-269.
doi:10.1016/j.powtec.2016.09.086 .

Ahribesh, Aysha Ali, Lazarević, Slavica, Janković-Častvan, Ivona, Jokić, Bojan, Spasojević, Vojislav, Radetić, Tamara, Janaćković, Đorđe, Petrović, Rada, "Influence of the synthesis parameters on the properties of the sepiolite-based magnetic adsorbents" in Powder Technology, 305 (2017):260-269,
https://doi.org/10.1016/j.powtec.2016.09.086 . .

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Vuković, Zorica M.
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Pavlović, Vladimir B.
AU  - Onjia, Antonije
AU  - Nastasović, Aleksandra
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3752
AB  - Magnetic macroporous crosslinked copolymer glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA) samples with different magnetite content were prepared by suspension copolymerization and functionalized with diethylene triamine. Samples were characterized by elemental analysis, mercury porosimetry, Fourier transform infrared spectroscopy (FTIR) analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy, transmission electron microscopy, SQUID magnetometry and X-ray photoelectron spectroscopy (XPS). The selected amino-functionalized sample was tested as a potential sorbent for the Mo(VI) and Re(VII) oxyanions from aqueous solutions. The influence of pH, ionic strength and possible interfering of cations and anions was investigated. Equilibrium data were analyzed with Langmuir, Freundlich and Tempkin adsorption isotherm models. Sorption studies were carried out in a batch competitive experiments, in the pH range 1-8, at 298 K. Obtained results indicate that 92% of Re(VII) and 98% of Mo(VI) were sorbed at pH 2.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption
EP  - 50
SP  - 38
VL  - 705
DO  - 10.1016/j.jallcom.2017.02.108
ER  - 

@article{
author = "Marković, Bojana M. and Vuković, Zorica M. and Spasojević, Vojislav and Kusigerski, Vladan and Pavlović, Vladimir B. and Onjia, Antonije and Nastasović, Aleksandra",
year = "2017",
abstract = "Magnetic macroporous crosslinked copolymer glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA) samples with different magnetite content were prepared by suspension copolymerization and functionalized with diethylene triamine. Samples were characterized by elemental analysis, mercury porosimetry, Fourier transform infrared spectroscopy (FTIR) analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy, transmission electron microscopy, SQUID magnetometry and X-ray photoelectron spectroscopy (XPS). The selected amino-functionalized sample was tested as a potential sorbent for the Mo(VI) and Re(VII) oxyanions from aqueous solutions. The influence of pH, ionic strength and possible interfering of cations and anions was investigated. Equilibrium data were analyzed with Langmuir, Freundlich and Tempkin adsorption isotherm models. Sorption studies were carried out in a batch competitive experiments, in the pH range 1-8, at 298 K. Obtained results indicate that 92% of Re(VII) and 98% of Mo(VI) were sorbed at pH 2.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption",
pages = "50-38",
volume = "705",
doi = "10.1016/j.jallcom.2017.02.108"
}

Marković, B. M., Vuković, Z. M., Spasojević, V., Kusigerski, V., Pavlović, V. B., Onjia, A.,& Nastasović, A.. (2017). Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 705, 38-50.
https://doi.org/10.1016/j.jallcom.2017.02.108

Marković BM, Vuković ZM, Spasojević V, Kusigerski V, Pavlović VB, Onjia A, Nastasović A. Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption. in Journal of Alloys and Compounds. 2017;705:38-50.
doi:10.1016/j.jallcom.2017.02.108 .

Marković, Bojana M., Vuković, Zorica M., Spasojević, Vojislav, Kusigerski, Vladan, Pavlović, Vladimir B., Onjia, Antonije, Nastasović, Aleksandra, "Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption" in Journal of Alloys and Compounds, 705 (2017):38-50,
https://doi.org/10.1016/j.jallcom.2017.02.108 . .

TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Lazić, N. L.
AU  - Talijan, Nadežda M.
AU  - Spasojević, Vojislav
AU  - Stajić-Trošić, Jasna
AU  - Ćosović, Vladan
AU  - Aleksić, Radoslav
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5607
AB  - One of the more important developments in magnetic materials, polymer bonded magnets, have opened a new world of application opportunities. The Nd-Fe-B/polymer composite materials offer an excellent combination of strong magnetic and dynamical-mechanical properties. However, the transition temperatures of filler and matrix should be selected carefully considering the future application. Uniform particle distribution and good adhesion between Nd-Fe-B powder particles and polymer are essential for the quality of the composite, while stiffness of polymer matrix is one of the influencing factors as well. The damping properties of Nd-Fe-B/polymer composites with 15 wt.%, 50 wt.% and 75 wt.% of Nd-Fe-B powder were studied by dynamic mechanical analysis and compared with a pure polymer sample. Thermal stability was analyzed using a simultaneous differential scanning calorimetric and thermogravimetric analysis technique.
PB  - Polish Academy of Sciences
T2  - Acta Physica Polonica A
T1  - Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content
EP  - 863
IS  - 5
SP  - 859
VL  - 117
DO  - 10.12693/APhysPolA.117.859
ER  - 

@article{
author = "Grujić, Aleksandar and Lazić, N. L. and Talijan, Nadežda M. and Spasojević, Vojislav and Stajić-Trošić, Jasna and Ćosović, Vladan and Aleksić, Radoslav",
year = "2010",
abstract = "One of the more important developments in magnetic materials, polymer bonded magnets, have opened a new world of application opportunities. The Nd-Fe-B/polymer composite materials offer an excellent combination of strong magnetic and dynamical-mechanical properties. However, the transition temperatures of filler and matrix should be selected carefully considering the future application. Uniform particle distribution and good adhesion between Nd-Fe-B powder particles and polymer are essential for the quality of the composite, while stiffness of polymer matrix is one of the influencing factors as well. The damping properties of Nd-Fe-B/polymer composites with 15 wt.%, 50 wt.% and 75 wt.% of Nd-Fe-B powder were studied by dynamic mechanical analysis and compared with a pure polymer sample. Thermal stability was analyzed using a simultaneous differential scanning calorimetric and thermogravimetric analysis technique.",
publisher = "Polish Academy of Sciences",
journal = "Acta Physica Polonica A",
title = "Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content",
pages = "863-859",
number = "5",
volume = "117",
doi = "10.12693/APhysPolA.117.859"
}

Grujić, A., Lazić, N. L., Talijan, N. M., Spasojević, V., Stajić-Trošić, J., Ćosović, V.,& Aleksić, R.. (2010). Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content. in Acta Physica Polonica A
Polish Academy of Sciences., 117(5), 859-863.
https://doi.org/10.12693/APhysPolA.117.859

Grujić A, Lazić NL, Talijan NM, Spasojević V, Stajić-Trošić J, Ćosović V, Aleksić R. Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content. in Acta Physica Polonica A. 2010;117(5):859-863.
doi:10.12693/APhysPolA.117.859 .

Grujić, Aleksandar, Lazić, N. L., Talijan, Nadežda M., Spasojević, Vojislav, Stajić-Trošić, Jasna, Ćosović, Vladan, Aleksić, Radoslav, "Polymer-Bonded Magnetic Materials with Various Nd-Fe-B Filler Content" in Acta Physica Polonica A, 117, no. 5 (2010):859-863,
https://doi.org/10.12693/APhysPolA.117.859 . .