TY  - JOUR
AU  - Maksin, Danijela
AU  - Nastasović, Aleksandra
AU  - Maksin, Tatjana N.
AU  - Sandić, Zvjezdana P.
AU  - Loos, Katja
AU  - Ekmeščić, Bojana
AU  - Onjia, Antonije
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3470
AB  - Synthesis of an unconventional resin based on 4-vinylpyridine (4-VP) and its Cu(II) sorption behavior were studied. Three samples of macroporous crosslinked poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) (P4VPE) with different porosity parameters were prepared by suspension copolymerization by varying the n-heptane amount in the inert component. The samples were characterized by mercury porosimetry, elemental analysis and X-ray photoelectron spectroscopy (XPS). The sorption of P4VPE for Cu(II) ions, determined under non-competitive conditions, was relatively rapid, i.e., the maximum capacity was reached within 30 min. The maximum experimental sorption capacity for the sample with the highest values of pore diameter and specific pore volume (sample 3, Q(eq) = 89 mg g(-1)) was 17.5 times higher than for the sample with the lowest values of pore diameter and specific pore volume (sample 1, Q(eq) = 5.1 mg g(-1)). Since the values for pyridine content in all P4VPE samples were almost the same, it was concluded that the porosity parameters have predominant influence on Cu(II) sorption rates on P4VPE. The sorption behavior and the rate-controlling mechanisms were analyzed using six kinetic models (pseudo-first order, pseudo-second order, Elovich, intraparticle diffusion, Bangham and Boyd models). XPS study clarified the nature of the formed P4VPE-Cu(II) species.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis
EP  - 19
IS  - 1
SP  - 9
VL  - 70
DO  - 10.2298/HEMIND141203007M
ER  - 

@article{
author = "Maksin, Danijela and Nastasović, Aleksandra and Maksin, Tatjana N. and Sandić, Zvjezdana P. and Loos, Katja and Ekmeščić, Bojana and Onjia, Antonije",
year = "2016",
abstract = "Synthesis of an unconventional resin based on 4-vinylpyridine (4-VP) and its Cu(II) sorption behavior were studied. Three samples of macroporous crosslinked poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) (P4VPE) with different porosity parameters were prepared by suspension copolymerization by varying the n-heptane amount in the inert component. The samples were characterized by mercury porosimetry, elemental analysis and X-ray photoelectron spectroscopy (XPS). The sorption of P4VPE for Cu(II) ions, determined under non-competitive conditions, was relatively rapid, i.e., the maximum capacity was reached within 30 min. The maximum experimental sorption capacity for the sample with the highest values of pore diameter and specific pore volume (sample 3, Q(eq) = 89 mg g(-1)) was 17.5 times higher than for the sample with the lowest values of pore diameter and specific pore volume (sample 1, Q(eq) = 5.1 mg g(-1)). Since the values for pyridine content in all P4VPE samples were almost the same, it was concluded that the porosity parameters have predominant influence on Cu(II) sorption rates on P4VPE. The sorption behavior and the rate-controlling mechanisms were analyzed using six kinetic models (pseudo-first order, pseudo-second order, Elovich, intraparticle diffusion, Bangham and Boyd models). XPS study clarified the nature of the formed P4VPE-Cu(II) species.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis",
pages = "19-9",
number = "1",
volume = "70",
doi = "10.2298/HEMIND141203007M"
}

Maksin, D., Nastasović, A., Maksin, T. N., Sandić, Z. P., Loos, K., Ekmeščić, B.,& Onjia, A.. (2016). Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 70(1), 9-19.
https://doi.org/10.2298/HEMIND141203007M

Maksin D, Nastasović A, Maksin TN, Sandić ZP, Loos K, Ekmeščić B, Onjia A. Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis. in Hemijska industrija. 2016;70(1):9-19.
doi:10.2298/HEMIND141203007M .

Maksin, Danijela, Nastasović, Aleksandra, Maksin, Tatjana N., Sandić, Zvjezdana P., Loos, Katja, Ekmeščić, Bojana, Onjia, Antonije, "Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis" in Hemijska industrija, 70, no. 1 (2016):9-19,
https://doi.org/10.2298/HEMIND141203007M . .

TY  - JOUR
AU  - Vukomanović, Marija
AU  - Škapin, Srečo Davor
AU  - Jančar, Boštjan
AU  - Maksin, Tatjana
AU  - Ignjatović, Nenad
AU  - Uskoković, Vuk
AU  - Uskoković, Dragan
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5650
AB  - Biodegradable poly(D,L-lactide-co-glycolide) (PLGA) and bioactive hydroxyapatite (HAP) are selected for the formation of a multifunctional system with the specific core-shell structure to be applied as a carrier of a drug. As a result, both components of PLGA/HAp core-shells are able to capture one part of the drug. Polymeric shells consisting of small nanospheres up to 20 nm in size act as a matrix in which one part of the drug is dispersed. In the same time, ceramic cores are formed of rod-like hydroxyapatite particles at the surface of which another part of the drug is adsorbed onto the interface between the polymer and the ceramics. The content of the loaded drug, as well as the selected solvent/non-solvent system, have a crucial influence on the resulting PLGA/HAp morphology and, finally, unimodal distribution of core-shells is obtained. The redistribution of the drug between the organic and inorganic parts of the material is expected to provide an interesting contribution to the kinetics of the drug release resulting in non-typical two-step drug release. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces B: Biointerfaces
T1  - Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery
EP  - 413
IS  - 2
SP  - 404
VL  - 82
DO  - 10.1016/j.colsurfb.2010.09.011
UR  - https://hdl.handle.net/21.15107/rcub_dais_2749
ER  - 

@article{
author = "Vukomanović, Marija and Škapin, Srečo Davor and Jančar, Boštjan and Maksin, Tatjana and Ignjatović, Nenad and Uskoković, Vuk and Uskoković, Dragan",
year = "2011",
abstract = "Biodegradable poly(D,L-lactide-co-glycolide) (PLGA) and bioactive hydroxyapatite (HAP) are selected for the formation of a multifunctional system with the specific core-shell structure to be applied as a carrier of a drug. As a result, both components of PLGA/HAp core-shells are able to capture one part of the drug. Polymeric shells consisting of small nanospheres up to 20 nm in size act as a matrix in which one part of the drug is dispersed. In the same time, ceramic cores are formed of rod-like hydroxyapatite particles at the surface of which another part of the drug is adsorbed onto the interface between the polymer and the ceramics. The content of the loaded drug, as well as the selected solvent/non-solvent system, have a crucial influence on the resulting PLGA/HAp morphology and, finally, unimodal distribution of core-shells is obtained. The redistribution of the drug between the organic and inorganic parts of the material is expected to provide an interesting contribution to the kinetics of the drug release resulting in non-typical two-step drug release. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces B: Biointerfaces",
title = "Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery",
pages = "413-404",
number = "2",
volume = "82",
doi = "10.1016/j.colsurfb.2010.09.011",
url = "https://hdl.handle.net/21.15107/rcub_dais_2749"
}

Vukomanović, M., Škapin, S. D., Jančar, B., Maksin, T., Ignjatović, N., Uskoković, V.,& Uskoković, D.. (2011). Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery. in Colloids and Surfaces B: Biointerfaces, 82(2), 404-413.
https://doi.org/10.1016/j.colsurfb.2010.09.011
https://hdl.handle.net/21.15107/rcub_dais_2749

Vukomanović M, Škapin SD, Jančar B, Maksin T, Ignjatović N, Uskoković V, Uskoković D. Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery. in Colloids and Surfaces B: Biointerfaces. 2011;82(2):404-413.
doi:10.1016/j.colsurfb.2010.09.011
https://hdl.handle.net/21.15107/rcub_dais_2749 .

Vukomanović, Marija, Škapin, Srečo Davor, Jančar, Boštjan, Maksin, Tatjana, Ignjatović, Nenad, Uskoković, Vuk, Uskoković, Dragan, "Poly(D,L-lactide-co-glycolide)/hydroxyapatite core-shell nanospheres. Part 1: A multifunctional system for controlled drug delivery" in Colloids and Surfaces B: Biointerfaces, 82, no. 2 (2011):404-413,
https://doi.org/10.1016/j.colsurfb.2010.09.011 .,
https://hdl.handle.net/21.15107/rcub_dais_2749 .

TY  - JOUR
AU  - Đokić, Divna Đ.
AU  - Janković, Drina
AU  - Maksin, Tatjana N.
AU  - Onjia, Antonije
PY  - 1999
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/256
AB  - Tc-99m-Hipp as a modified Tc-99m-DTpA, and Tc-99m-PAH as a new renal agent are developed. Each veal of lyophilised kit contain hippuric (Hipp) or p-aminohippuric acid (PAH), diethyltriaminepentaacetic acid as calciumtrisodium salt (CaNa(3)DTPA) and stannouschloride (SnCl2. xH(2)O), in molar ratio Hipp/PAH:DTPA = 4:1. They are high radiochemical purity radiopharmaceuticals, with hydrophilic character and low percentage of protein binding. The ITL chromatography and HPLC analyses of these labeled compounds have shown almost identical results as Tc-99m-DTPA, but their biological behavior in rats confirm certain differences. Tc-99m-Hipp is a renal agent clearing by the glomerular system, with better pharmacokinetical parameters than Tc-99m-DTPA: t(1/2(alpha)) = 4.1 min, t(1/2(beta)) = 198.6 min, K-d = 1.2.10(-2)min(-1) and a twofold value for blood clearance (Cl=2.07 ml/min). Tc-99m-PAH is a quite different renal agent, rapidly secreted by kidney as a tubular secretion agent. Its pharmacokinetical parameters: t(1/2(alpha)) = 2.5 min, t(1/2(beta)) = 41.7 min and K-cl = 5.1.10(-4) min(-1) are almost equal to those of Tc-99m-MAG(3), but the blood clearance of Cl = 5.22 ml/min is even higher than that of IOH clearance.
PB  - Springer, Dordrecht
T2  - Journal of Radioanalytical and Nuclear Chemistry
T1  - Technetium-99m labeling of hippuric and p-amino-hippuric acid in the presence of DTPA: Biological and pharmacokinetic evaluation and comparison with Tc-99m-DTPA
EP  - 285
IS  - 2
SP  - 279
VL  - 242
DO  - 10.1007/BF02345554
ER  - 

@article{
author = "Đokić, Divna Đ. and Janković, Drina and Maksin, Tatjana N. and Onjia, Antonije",
year = "1999",
abstract = "Tc-99m-Hipp as a modified Tc-99m-DTpA, and Tc-99m-PAH as a new renal agent are developed. Each veal of lyophilised kit contain hippuric (Hipp) or p-aminohippuric acid (PAH), diethyltriaminepentaacetic acid as calciumtrisodium salt (CaNa(3)DTPA) and stannouschloride (SnCl2. xH(2)O), in molar ratio Hipp/PAH:DTPA = 4:1. They are high radiochemical purity radiopharmaceuticals, with hydrophilic character and low percentage of protein binding. The ITL chromatography and HPLC analyses of these labeled compounds have shown almost identical results as Tc-99m-DTPA, but their biological behavior in rats confirm certain differences. Tc-99m-Hipp is a renal agent clearing by the glomerular system, with better pharmacokinetical parameters than Tc-99m-DTPA: t(1/2(alpha)) = 4.1 min, t(1/2(beta)) = 198.6 min, K-d = 1.2.10(-2)min(-1) and a twofold value for blood clearance (Cl=2.07 ml/min). Tc-99m-PAH is a quite different renal agent, rapidly secreted by kidney as a tubular secretion agent. Its pharmacokinetical parameters: t(1/2(alpha)) = 2.5 min, t(1/2(beta)) = 41.7 min and K-cl = 5.1.10(-4) min(-1) are almost equal to those of Tc-99m-MAG(3), but the blood clearance of Cl = 5.22 ml/min is even higher than that of IOH clearance.",
publisher = "Springer, Dordrecht",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
title = "Technetium-99m labeling of hippuric and p-amino-hippuric acid in the presence of DTPA: Biological and pharmacokinetic evaluation and comparison with Tc-99m-DTPA",
pages = "285-279",
number = "2",
volume = "242",
doi = "10.1007/BF02345554"
}

Đokić, D. Đ., Janković, D., Maksin, T. N.,& Onjia, A.. (1999). Technetium-99m labeling of hippuric and p-amino-hippuric acid in the presence of DTPA: Biological and pharmacokinetic evaluation and comparison with Tc-99m-DTPA. in Journal of Radioanalytical and Nuclear Chemistry
Springer, Dordrecht., 242(2), 279-285.
https://doi.org/10.1007/BF02345554

Đokić DĐ, Janković D, Maksin TN, Onjia A. Technetium-99m labeling of hippuric and p-amino-hippuric acid in the presence of DTPA: Biological and pharmacokinetic evaluation and comparison with Tc-99m-DTPA. in Journal of Radioanalytical and Nuclear Chemistry. 1999;242(2):279-285.
doi:10.1007/BF02345554 .

Đokić, Divna Đ., Janković, Drina, Maksin, Tatjana N., Onjia, Antonije, "Technetium-99m labeling of hippuric and p-amino-hippuric acid in the presence of DTPA: Biological and pharmacokinetic evaluation and comparison with Tc-99m-DTPA" in Journal of Radioanalytical and Nuclear Chemistry, 242, no. 2 (1999):279-285,
https://doi.org/10.1007/BF02345554 . .