TY  - JOUR
AU  - Vuković, G.
AU  - Marinković, Aleksandar D.
AU  - Obradović, Maja
AU  - Radmilović, V.
AU  - Čolić, M.
AU  - Aleksić, Radoslav
AU  - Uskoković, Petar S.
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/584
AB  - Surface functionalization of multi-walled carbon nanotubes (MWCNTs), with amino groups via chemical modification of carboxyl groups introduced on the nanotube surface, using O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (N-HATU) and N,N-diisopropylethylamine (DIEA) is reported. The N-HATU coupling agent provides faster reaction rate and the reaction occurs at lower temperature compared to amidation and acylation-amidation chemistry. The amines, 1,6-hexanediamine (HDA), diethylenetriamine (DETA), triethylenetetramine (TETA) and 1,4-phenylenediamine (PDA) were used. The resulting materials were characterized with different techniques such as FTIR, XRD, elemental analysis, TGA, TEM, UV-vis spectroscopy and cyclic voltammetry. MWCNTs functionalized with PDA posses the best dispersibility and electron transfer properties in comparison to the others amines. Functionalized MWCNTs, at the concentrations between 1 and 50 μg ml-1, were not cytotoxic for the fibroblast L929 cell line. However, the concentrations of MWCNTs higher of 10 μg ml-1 reduced cell growth and this effect correlated positively with the degree of their uptake by L929 cells.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Synthesis, characterization and cytotoxicity of surface amino-functionalized water-dispersible multi-walled carbon nanotubes
VL  - 255
IS  - 18
SP  - 8067
EP  - 8075
DO  - 10.1016/j.apsusc.2009.05.016
ER  - 

@article{
author = "Vuković, G. and Marinković, Aleksandar D. and Obradović, Maja and Radmilović, V. and Čolić, M. and Aleksić, Radoslav and Uskoković, Petar S.",
year = "2009",
abstract = "Surface functionalization of multi-walled carbon nanotubes (MWCNTs), with amino groups via chemical modification of carboxyl groups introduced on the nanotube surface, using O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (N-HATU) and N,N-diisopropylethylamine (DIEA) is reported. The N-HATU coupling agent provides faster reaction rate and the reaction occurs at lower temperature compared to amidation and acylation-amidation chemistry. The amines, 1,6-hexanediamine (HDA), diethylenetriamine (DETA), triethylenetetramine (TETA) and 1,4-phenylenediamine (PDA) were used. The resulting materials were characterized with different techniques such as FTIR, XRD, elemental analysis, TGA, TEM, UV-vis spectroscopy and cyclic voltammetry. MWCNTs functionalized with PDA posses the best dispersibility and electron transfer properties in comparison to the others amines. Functionalized MWCNTs, at the concentrations between 1 and 50 μg ml-1, were not cytotoxic for the fibroblast L929 cell line. However, the concentrations of MWCNTs higher of 10 μg ml-1 reduced cell growth and this effect correlated positively with the degree of their uptake by L929 cells.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Synthesis, characterization and cytotoxicity of surface amino-functionalized water-dispersible multi-walled carbon nanotubes",
volume = "255",
number = "18",
pages = "8067-8075",
doi = "10.1016/j.apsusc.2009.05.016"
}

Vuković, G., Marinković, A. D., Obradović, M., Radmilović, V., Čolić, M., Aleksić, R.,& Uskoković, P. S.. (2009). Synthesis, characterization and cytotoxicity of surface amino-functionalized water-dispersible multi-walled carbon nanotubes. in Applied Surface Science
Elsevier., 255(18), 8067-8075.
https://doi.org/10.1016/j.apsusc.2009.05.016

Vuković G, Marinković AD, Obradović M, Radmilović V, Čolić M, Aleksić R, Uskoković PS. Synthesis, characterization and cytotoxicity of surface amino-functionalized water-dispersible multi-walled carbon nanotubes. in Applied Surface Science. 2009;255(18):8067-8075.
doi:10.1016/j.apsusc.2009.05.016 .

Vuković, G., Marinković, Aleksandar D., Obradović, Maja, Radmilović, V., Čolić, M., Aleksić, Radoslav, Uskoković, Petar S., "Synthesis, characterization and cytotoxicity of surface amino-functionalized water-dispersible multi-walled carbon nanotubes" in Applied Surface Science, 255, no. 18 (2009):8067-8075,
https://doi.org/10.1016/j.apsusc.2009.05.016 . .

TY  - JOUR
AU  - Ćosović, Vladan
AU  - Talijan, Nadežda M.
AU  - Grujić, Aleksandar
AU  - Stajić-Trošić, Jasna
AU  - Živković, Dragana
AU  - Lee, Z.
AU  - Radmilović, V.
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/561
AB  - The rapid-quenched (R/Q) and subsequently optimally annealed Nd-Fe-B alloy with 12 wt% Nd was characterized using the X-Ray diffractometry (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HREM) and superconducting quantum interference device (SQUID) magnetometer. It was found that microstructure of the investigated alloy mainly consist of Fe3B, Nd2Fe14B phases and minor content of α-Fe phase, with mean crystal grain sizes being below 30 nm. The ferromagnetic exchange coupling between the grains of identified hard and soft magnetic phases has direct influence on the magnetic properties as it is illustrated by SQUID hysteresis loop. Correlation of the measured magnetic properties with results of microstructure analysis indicates that the investigated rapid-quenched Nd-Fe-B alloy has the nanocomposite structure in optimal magnetic state.
T2  - Metalurgija
T1  - Study of microstructure and magnetic properties of optimally annealed R/Q Nd4.5Fe77B18.5 alloy
VL  - 15
IS  - 1
SP  - 39
EP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_cer_561
ER  - 

@article{
author = "Ćosović, Vladan and Talijan, Nadežda M. and Grujić, Aleksandar and Stajić-Trošić, Jasna and Živković, Dragana and Lee, Z. and Radmilović, V.",
year = "2009",
abstract = "The rapid-quenched (R/Q) and subsequently optimally annealed Nd-Fe-B alloy with 12 wt% Nd was characterized using the X-Ray diffractometry (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HREM) and superconducting quantum interference device (SQUID) magnetometer. It was found that microstructure of the investigated alloy mainly consist of Fe3B, Nd2Fe14B phases and minor content of α-Fe phase, with mean crystal grain sizes being below 30 nm. The ferromagnetic exchange coupling between the grains of identified hard and soft magnetic phases has direct influence on the magnetic properties as it is illustrated by SQUID hysteresis loop. Correlation of the measured magnetic properties with results of microstructure analysis indicates that the investigated rapid-quenched Nd-Fe-B alloy has the nanocomposite structure in optimal magnetic state.",
journal = "Metalurgija",
title = "Study of microstructure and magnetic properties of optimally annealed R/Q Nd4.5Fe77B18.5 alloy",
volume = "15",
number = "1",
pages = "39-44",
url = "https://hdl.handle.net/21.15107/rcub_cer_561"
}

Ćosović, V., Talijan, N. M., Grujić, A., Stajić-Trošić, J., Živković, D., Lee, Z.,& Radmilović, V.. (2009). Study of microstructure and magnetic properties of optimally annealed R/Q Nd4.5Fe77B18.5 alloy. in Metalurgija, 15(1), 39-44.
https://hdl.handle.net/21.15107/rcub_cer_561

Ćosović V, Talijan NM, Grujić A, Stajić-Trošić J, Živković D, Lee Z, Radmilović V. Study of microstructure and magnetic properties of optimally annealed R/Q Nd4.5Fe77B18.5 alloy. in Metalurgija. 2009;15(1):39-44.
https://hdl.handle.net/21.15107/rcub_cer_561 .

Ćosović, Vladan, Talijan, Nadežda M., Grujić, Aleksandar, Stajić-Trošić, Jasna, Živković, Dragana, Lee, Z., Radmilović, V., "Study of microstructure and magnetic properties of optimally annealed R/Q Nd4.5Fe77B18.5 alloy" in Metalurgija, 15, no. 1 (2009):39-44,
https://hdl.handle.net/21.15107/rcub_cer_561 .

TY  - JOUR
AU  - Talijan, Nadežda M.
AU  - Ćosović, Vladan
AU  - Stajić-Trošić, Jasna
AU  - Grujić, Aleksandar
AU  - Žak, Tomas
AU  - Lee, Z.
AU  - Radmilović, V.
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/617
AB  - Changes in the phase composition and crystallite size of a rapid quenched Nd4.5Fe77B18.5 alloy, caused by thermomagnetic measurements (TM) have been studied using XRD methods of phase analysis, crystallite size and lattice microstrain determination. Structural changes in regard to optimal magnetic state were additionally analyzed by TEM. Magnetic properties in optimal magnetic state and after TM were observed using room temperature SQUID measurements. The obtained experimental results suggest the Fe3B/Nd2Fe14B and partly α-Fe nanocomposite structure of the alloy in the optimized magnetic state, with mean crystallite size (< 30 nm). After TM, an increased amount of α-Fe phase, presence of different oxide and Fe-B phases as well as growth of crystallites are found to be the main reasons for the observed quality loss of hard magnetic properties.
T2  - Materials Transactions
T1  - Thermomagnetic analysis of nanocrystalline Nd4.5Fe 77B18.5 alloy
VL  - 50
IS  - 9
SP  - 2302
EP  - 2307
DO  - 10.2320/matertrans.M2009138
ER  - 

@article{
author = "Talijan, Nadežda M. and Ćosović, Vladan and Stajić-Trošić, Jasna and Grujić, Aleksandar and Žak, Tomas and Lee, Z. and Radmilović, V.",
year = "2009",
abstract = "Changes in the phase composition and crystallite size of a rapid quenched Nd4.5Fe77B18.5 alloy, caused by thermomagnetic measurements (TM) have been studied using XRD methods of phase analysis, crystallite size and lattice microstrain determination. Structural changes in regard to optimal magnetic state were additionally analyzed by TEM. Magnetic properties in optimal magnetic state and after TM were observed using room temperature SQUID measurements. The obtained experimental results suggest the Fe3B/Nd2Fe14B and partly α-Fe nanocomposite structure of the alloy in the optimized magnetic state, with mean crystallite size (< 30 nm). After TM, an increased amount of α-Fe phase, presence of different oxide and Fe-B phases as well as growth of crystallites are found to be the main reasons for the observed quality loss of hard magnetic properties.",
journal = "Materials Transactions",
title = "Thermomagnetic analysis of nanocrystalline Nd4.5Fe 77B18.5 alloy",
volume = "50",
number = "9",
pages = "2302-2307",
doi = "10.2320/matertrans.M2009138"
}

Talijan, N. M., Ćosović, V., Stajić-Trošić, J., Grujić, A., Žak, T., Lee, Z.,& Radmilović, V.. (2009). Thermomagnetic analysis of nanocrystalline Nd4.5Fe 77B18.5 alloy. in Materials Transactions, 50(9), 2302-2307.
https://doi.org/10.2320/matertrans.M2009138

Talijan NM, Ćosović V, Stajić-Trošić J, Grujić A, Žak T, Lee Z, Radmilović V. Thermomagnetic analysis of nanocrystalline Nd4.5Fe 77B18.5 alloy. in Materials Transactions. 2009;50(9):2302-2307.
doi:10.2320/matertrans.M2009138 .

Talijan, Nadežda M., Ćosović, Vladan, Stajić-Trošić, Jasna, Grujić, Aleksandar, Žak, Tomas, Lee, Z., Radmilović, V., "Thermomagnetic analysis of nanocrystalline Nd4.5Fe 77B18.5 alloy" in Materials Transactions, 50, no. 9 (2009):2302-2307,
https://doi.org/10.2320/matertrans.M2009138 . .

TY  - JOUR
AU  - Pavlović, Miomir
AU  - Pavlović, Lj.J.
AU  - Ivanović, Evica
AU  - Radmilović, V.
AU  - Popov, Konstantin I.
PY  - 2001
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/28
AB  - The quantitative microstructural analysis and the sieve analysis of copper powder as well as the scanning electron microscopy analysis of the copper powders particles were performed. It was found that the structure of the copper powder particles determines the apparent density of copper powder. The powder particles from the same fractions of different powders occupy approximately the same volume, but the structure of metallic copper is very different. This causes the difference in apparent densities of copper powder obtained under different conditions. The more dendritic is the structure of powder particles the smaller is the apparent density of copper powder.
AB  - Izvršena je kvalitativna mikrostrukturna i granulometrijska analiza bakarnih prahova kao i analiza morfologije i strukture čestica praha pomoću skenirajuće elektronske mikroskopije (SEM). Ustanovljeno je da struktura čestica praha određuje nasipnu masu bakarnog praha. Čestice iste frakcije različitih prahova zauzimaju otprilike istu zapreminu, ali je struktura metalnog bakra različita. Ovo uzrokuje razlike u nasipnoj masi bakarnog praha dobijenog pod različitim uslovima. Što je struktura čestica više dendritična to je manja nasipna masa bakarnog praha.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - The effect of particle structure on apparent density of electrolytic copper powder
T1  - Uticaj strukture čestica na nasipnu masu elektrolitički dobijenog bakarnog praha
VL  - 66
IS  - 11-12
SP  - 923
EP  - 933
UR  - https://hdl.handle.net/21.15107/rcub_cer_28
ER  - 

@article{
author = "Pavlović, Miomir and Pavlović, Lj.J. and Ivanović, Evica and Radmilović, V. and Popov, Konstantin I.",
year = "2001",
abstract = "The quantitative microstructural analysis and the sieve analysis of copper powder as well as the scanning electron microscopy analysis of the copper powders particles were performed. It was found that the structure of the copper powder particles determines the apparent density of copper powder. The powder particles from the same fractions of different powders occupy approximately the same volume, but the structure of metallic copper is very different. This causes the difference in apparent densities of copper powder obtained under different conditions. The more dendritic is the structure of powder particles the smaller is the apparent density of copper powder., Izvršena je kvalitativna mikrostrukturna i granulometrijska analiza bakarnih prahova kao i analiza morfologije i strukture čestica praha pomoću skenirajuće elektronske mikroskopije (SEM). Ustanovljeno je da struktura čestica praha određuje nasipnu masu bakarnog praha. Čestice iste frakcije različitih prahova zauzimaju otprilike istu zapreminu, ali je struktura metalnog bakra različita. Ovo uzrokuje razlike u nasipnoj masi bakarnog praha dobijenog pod različitim uslovima. Što je struktura čestica više dendritična to je manja nasipna masa bakarnog praha.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "The effect of particle structure on apparent density of electrolytic copper powder, Uticaj strukture čestica na nasipnu masu elektrolitički dobijenog bakarnog praha",
volume = "66",
number = "11-12",
pages = "923-933",
url = "https://hdl.handle.net/21.15107/rcub_cer_28"
}

Pavlović, M., Pavlović, Lj.J., Ivanović, E., Radmilović, V.,& Popov, K. I.. (2001). The effect of particle structure on apparent density of electrolytic copper powder. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 66(11-12), 923-933.
https://hdl.handle.net/21.15107/rcub_cer_28

Pavlović M, Pavlović L, Ivanović E, Radmilović V, Popov KI. The effect of particle structure on apparent density of electrolytic copper powder. in Journal of the Serbian Chemical Society. 2001;66(11-12):923-933.
https://hdl.handle.net/21.15107/rcub_cer_28 .

Pavlović, Miomir, Pavlović, Lj.J., Ivanović, Evica, Radmilović, V., Popov, Konstantin I., "The effect of particle structure on apparent density of electrolytic copper powder" in Journal of the Serbian Chemical Society, 66, no. 11-12 (2001):923-933,
https://hdl.handle.net/21.15107/rcub_cer_28 .