TY  - JOUR
AU  - Brajović, Ljiljana
AU  - Stojanović, Dušica B.
AU  - Mihailović, Pedja
AU  - Marković, Smilja
AU  - Romcević, Maja
AU  - Mitrić, Miodrag N.
AU  - Lazović, Vladimir
AU  - Dramlić, Dragan
AU  - Petricević, Slobodan
AU  - Romcević, Nebojsa
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/853
AB  - Bismuth germanium oxide Bi12GeO20 (BGO) has very interesting electrical, optical and magnetic properties. In order to make devices based on this material more flexible, its powder was used for preparing polymer composites. This study reports investigation of the effects of using different solvents and polymers in preparation of BGO composite on the microstructural and optical behaviour of the resulting material. Preparation of such composites by a solution casting method is described. Poly (methyl methacrylate) (PMMA) and polystyrene (PS)) were used as matrix materials and acetone and chloroform as solvents. Their microstructure and the quality of BGO dispersion and deaggregation in polymer matrix were analyzed by SEM, Raman, XRD and optical spectroscopy. The influence of particle size distribution, their shapes, and concentration on the optical transmission is calculated based on Mie scattering theory and discussed, too.
PB  - Elsevier Ltd
T2  - Journal of Alloys and Compounds
T1  - Preparation and characterization of bismuth germanium oxide (BGO) polymer composites
EP  - 849
SP  - 841
VL  - 695
DO  - 10.1016/j.jallcom.2016.10.140
ER  - 

@article{
author = "Brajović, Ljiljana and Stojanović, Dušica B. and Mihailović, Pedja and Marković, Smilja and Romcević, Maja and Mitrić, Miodrag N. and Lazović, Vladimir and Dramlić, Dragan and Petricević, Slobodan and Romcević, Nebojsa",
year = "2017",
abstract = "Bismuth germanium oxide Bi12GeO20 (BGO) has very interesting electrical, optical and magnetic properties. In order to make devices based on this material more flexible, its powder was used for preparing polymer composites. This study reports investigation of the effects of using different solvents and polymers in preparation of BGO composite on the microstructural and optical behaviour of the resulting material. Preparation of such composites by a solution casting method is described. Poly (methyl methacrylate) (PMMA) and polystyrene (PS)) were used as matrix materials and acetone and chloroform as solvents. Their microstructure and the quality of BGO dispersion and deaggregation in polymer matrix were analyzed by SEM, Raman, XRD and optical spectroscopy. The influence of particle size distribution, their shapes, and concentration on the optical transmission is calculated based on Mie scattering theory and discussed, too.",
publisher = "Elsevier Ltd",
journal = "Journal of Alloys and Compounds",
title = "Preparation and characterization of bismuth germanium oxide (BGO) polymer composites",
pages = "849-841",
volume = "695",
doi = "10.1016/j.jallcom.2016.10.140"
}

Brajović, L., Stojanović, D. B., Mihailović, P., Marković, S., Romcević, M., Mitrić, M. N., Lazović, V., Dramlić, D., Petricević, S.,& Romcević, N.. (2017). Preparation and characterization of bismuth germanium oxide (BGO) polymer composites. in Journal of Alloys and Compounds
Elsevier Ltd., 695, 841-849.
https://doi.org/10.1016/j.jallcom.2016.10.140

Brajović L, Stojanović DB, Mihailović P, Marković S, Romcević M, Mitrić MN, Lazović V, Dramlić D, Petricević S, Romcević N. Preparation and characterization of bismuth germanium oxide (BGO) polymer composites. in Journal of Alloys and Compounds. 2017;695:841-849.
doi:10.1016/j.jallcom.2016.10.140 .

Brajović, Ljiljana, Stojanović, Dušica B., Mihailović, Pedja, Marković, Smilja, Romcević, Maja, Mitrić, Miodrag N., Lazović, Vladimir, Dramlić, Dragan, Petricević, Slobodan, Romcević, Nebojsa, "Preparation and characterization of bismuth germanium oxide (BGO) polymer composites" in Journal of Alloys and Compounds, 695 (2017):841-849,
https://doi.org/10.1016/j.jallcom.2016.10.140 . .

TY  - JOUR
AU  - Dragaš, Jelena
AU  - Marinković, Snežana
AU  - Miličić, Ljiljana
AU  - Marković, Smilja
AU  - Tošić, Nikola
AU  - Ignjatović, Ivan
PY  - 2013
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/498
AB  - As the concern for the environment and need for sustainable construction practice continues to grow, research in the field of new materials made with waste materials which have a lower impact on the environment is gaining wide interest. This paper analyzes the characteristics of fly ash from power plant 'Nikola Tesla B', and its applications in alkali activated fly ash geopolymers as a new binder in concrete. Testing of the particle size distribution and chemical composition of fly ash has been done, as well as the testing of workability and compressive strength of geopolymer pastes under different ratios of water glass and sodium hydroxide. The results show that fly ash from power plant 'Nikola Tesla B' can be used as a binder in alkali activated fly ash geopolymers made with water glass and sodium hydroxide as alkali activators cured on 80°C a certain period of time.
AB  - U skladu sa rastućom brigom za zaštitu životne sredine i potrebom razvoja održivog građevinarstva, javlja se i veće interesovanje za istraživanja u oblasti novih materijala, koji će koristiti otpadne sirovine i imati manji uticaj na životnu sredinu. U ovom radu analizirane su karakteristike elektrofilterskog pepela iz termoelektrane 'Nikola Tesla B'u Obrenovcu i mogućnost njegove primene u geopolimerima na bazi alkalno aktiviranog elektrofilterskog pepela, kao novog veziva za beton. Vršena su eksperimentalna ispitivanja granulometrijskog i hemijskog sastava pepela, kao i ugradljivosti i čvrstoće pri pritisku uzoraka spravljenih od geopolimer pasti sa različitim odnosom vodenog stakla i natrijum-hidroksida kao alkalnih aktivatora. Rezultati istraživanja pokazuju da se pepeo iz termoelektrane 'Nikola Tesla B' može upotrebiti kao vezivo u geopolimerima sa vodenim staklom i natrijum-hidroksidom, kao alkalnim aktivatorom uz negu zagrevanjem na 80°C u određenom vremenskom periodu.
PB  - Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd
T2  - Izgradnja
T1  - Alkali activated fly ash geopolymers as a new binder in concrete
T1  - Geopolimeri na bazi alkalno aktiviranog elektrofilterskog pepela kao novo vezivo u betonu
EP  - 366
IS  - 9-10
SP  - 359
VL  - 67
UR  - https://hdl.handle.net/21.15107/rcub_grafar_498
ER  - 

@article{
author = "Dragaš, Jelena and Marinković, Snežana and Miličić, Ljiljana and Marković, Smilja and Tošić, Nikola and Ignjatović, Ivan",
year = "2013",
abstract = "As the concern for the environment and need for sustainable construction practice continues to grow, research in the field of new materials made with waste materials which have a lower impact on the environment is gaining wide interest. This paper analyzes the characteristics of fly ash from power plant 'Nikola Tesla B', and its applications in alkali activated fly ash geopolymers as a new binder in concrete. Testing of the particle size distribution and chemical composition of fly ash has been done, as well as the testing of workability and compressive strength of geopolymer pastes under different ratios of water glass and sodium hydroxide. The results show that fly ash from power plant 'Nikola Tesla B' can be used as a binder in alkali activated fly ash geopolymers made with water glass and sodium hydroxide as alkali activators cured on 80°C a certain period of time., U skladu sa rastućom brigom za zaštitu životne sredine i potrebom razvoja održivog građevinarstva, javlja se i veće interesovanje za istraživanja u oblasti novih materijala, koji će koristiti otpadne sirovine i imati manji uticaj na životnu sredinu. U ovom radu analizirane su karakteristike elektrofilterskog pepela iz termoelektrane 'Nikola Tesla B'u Obrenovcu i mogućnost njegove primene u geopolimerima na bazi alkalno aktiviranog elektrofilterskog pepela, kao novog veziva za beton. Vršena su eksperimentalna ispitivanja granulometrijskog i hemijskog sastava pepela, kao i ugradljivosti i čvrstoće pri pritisku uzoraka spravljenih od geopolimer pasti sa različitim odnosom vodenog stakla i natrijum-hidroksida kao alkalnih aktivatora. Rezultati istraživanja pokazuju da se pepeo iz termoelektrane 'Nikola Tesla B' može upotrebiti kao vezivo u geopolimerima sa vodenim staklom i natrijum-hidroksidom, kao alkalnim aktivatorom uz negu zagrevanjem na 80°C u određenom vremenskom periodu.",
publisher = "Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd",
journal = "Izgradnja",
title = "Alkali activated fly ash geopolymers as a new binder in concrete, Geopolimeri na bazi alkalno aktiviranog elektrofilterskog pepela kao novo vezivo u betonu",
pages = "366-359",
number = "9-10",
volume = "67",
url = "https://hdl.handle.net/21.15107/rcub_grafar_498"
}

Dragaš, J., Marinković, S., Miličić, L., Marković, S., Tošić, N.,& Ignjatović, I.. (2013). Alkali activated fly ash geopolymers as a new binder in concrete. in Izgradnja
Udruženje inženjera građevinarstva, geotehnike, arhitekture i urbanista "Izgradnja", Beograd., 67(9-10), 359-366.
https://hdl.handle.net/21.15107/rcub_grafar_498

Dragaš J, Marinković S, Miličić L, Marković S, Tošić N, Ignjatović I. Alkali activated fly ash geopolymers as a new binder in concrete. in Izgradnja. 2013;67(9-10):359-366.
https://hdl.handle.net/21.15107/rcub_grafar_498 .

Dragaš, Jelena, Marinković, Snežana, Miličić, Ljiljana, Marković, Smilja, Tošić, Nikola, Ignjatović, Ivan, "Alkali activated fly ash geopolymers as a new binder in concrete" in Izgradnja, 67, no. 9-10 (2013):359-366,
https://hdl.handle.net/21.15107/rcub_grafar_498 .