TY  - JOUR
AU  - Musbah, Salah S.
AU  - Radojević, Vesna
AU  - Borna, Nadežda V.
AU  - Stojanović, Dušica
AU  - Dramićanin, Miroslav
AU  - Marinković, Aleksandar
AU  - Aleksić, Radoslav
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1799
AB  - The results of a study related to the processing and characterization of poly(methyl methacrylate) (PMMA)-Y2O3 (Eu3+) nanocomposites are presented herein. The nanocomposite samples were prepared using a laboratory mixing molder with different contents of Eu-ion doped Y2O3 nanophosphor powder. The influence of particle content on the optical and dynamic mechanical properties of the nanocomposites was investigated. The intensity of the luminescence emission spectra increased as the nanophosphor content in the composite increased. The results of dynamic mechanical analysis revealed that the storage modulus, loss modulus and glass transition temperature (Tg) of the polymer composites increased with increasing content of the nanophosphor powder. The microhardness data also confirmed that the hardness number increased with nanoparticles concentration in the PMMA nanocomposites. The obtained results revealed a relatively linear relationship between Tg and the Vickers hardness.
AB  - U okviru ovog rada prezentovano je istraživanje procesiranja i karakterizacije nanokompozitnog materijala poli(metil-metakrilat) (PMMA)-Y2O3 (Eu3+). Uzorci sa različitim sadržajem nanofosfora Y2O3 dopiranog sa Eu jonima procesirani su u laboratorijskom uređaju za umešavanje termoplastičnih polimera. Ispitivan je uticaj udela nanočestica na optička i dinamičko-mehanička svojstva kompozita. Intenzitet luminiscentnog emisionog spektra kompozita raste sa udelom nanofosfora. Rezultati DMA pokazuju da modul deponovane energije, modul gubitaka i temperatura transformacije rastu sa povećanjem udela nanočestica. Mikrotvrdoća kompozita takođe raste sa povećanjem udela nanočestica u kompozitu i pokazuje skoro linearnu zavisnost od temperature transformacije (Tg).
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties
T1  - Nanokompozit PMMA-Y2O3 (Eu3+) - optička i mehanička svojstva
EP  - 1161
IS  - 8
SP  - 1153
VL  - 76
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1799
ER  - 

@article{
author = "Musbah, Salah S. and Radojević, Vesna and Borna, Nadežda V. and Stojanović, Dušica and Dramićanin, Miroslav and Marinković, Aleksandar and Aleksić, Radoslav",
year = "2011",
abstract = "The results of a study related to the processing and characterization of poly(methyl methacrylate) (PMMA)-Y2O3 (Eu3+) nanocomposites are presented herein. The nanocomposite samples were prepared using a laboratory mixing molder with different contents of Eu-ion doped Y2O3 nanophosphor powder. The influence of particle content on the optical and dynamic mechanical properties of the nanocomposites was investigated. The intensity of the luminescence emission spectra increased as the nanophosphor content in the composite increased. The results of dynamic mechanical analysis revealed that the storage modulus, loss modulus and glass transition temperature (Tg) of the polymer composites increased with increasing content of the nanophosphor powder. The microhardness data also confirmed that the hardness number increased with nanoparticles concentration in the PMMA nanocomposites. The obtained results revealed a relatively linear relationship between Tg and the Vickers hardness., U okviru ovog rada prezentovano je istraživanje procesiranja i karakterizacije nanokompozitnog materijala poli(metil-metakrilat) (PMMA)-Y2O3 (Eu3+). Uzorci sa različitim sadržajem nanofosfora Y2O3 dopiranog sa Eu jonima procesirani su u laboratorijskom uređaju za umešavanje termoplastičnih polimera. Ispitivan je uticaj udela nanočestica na optička i dinamičko-mehanička svojstva kompozita. Intenzitet luminiscentnog emisionog spektra kompozita raste sa udelom nanofosfora. Rezultati DMA pokazuju da modul deponovane energije, modul gubitaka i temperatura transformacije rastu sa povećanjem udela nanočestica. Mikrotvrdoća kompozita takođe raste sa povećanjem udela nanočestica u kompozitu i pokazuje skoro linearnu zavisnost od temperature transformacije (Tg).",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties, Nanokompozit PMMA-Y2O3 (Eu3+) - optička i mehanička svojstva",
pages = "1161-1153",
number = "8",
volume = "76",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1799"
}

Musbah, S. S., Radojević, V., Borna, N. V., Stojanović, D., Dramićanin, M., Marinković, A.,& Aleksić, R.. (2011). PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 76(8), 1153-1161.
https://hdl.handle.net/21.15107/rcub_technorep_1799

Musbah SS, Radojević V, Borna NV, Stojanović D, Dramićanin M, Marinković A, Aleksić R. PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties. in Journal of the Serbian Chemical Society. 2011;76(8):1153-1161.
https://hdl.handle.net/21.15107/rcub_technorep_1799 .

Musbah, Salah S., Radojević, Vesna, Borna, Nadežda V., Stojanović, Dušica, Dramićanin, Miroslav, Marinković, Aleksandar, Aleksić, Radoslav, "PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties" in Journal of the Serbian Chemical Society, 76, no. 8 (2011):1153-1161,
https://hdl.handle.net/21.15107/rcub_technorep_1799 .

TY  - JOUR
AU  - Krgović, Milorad
AU  - Borna, Nadežda V.
AU  - Živković, Predrag M.
AU  - Krgović, Milun
AU  - Uskoković, Petar
PY  - 1998
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/197
AB  - All researches conducted with the objective of energy savings in paper industry point out that today in Yugoslavia and South East Europe this industrial branch consumes 30-40% more specific energy than Western Europe. The reason lies in the obsolete technology and in insufficient technical discipline. This study implies application of new technologies in which all investments are paid back within 1 to 15 months and the capacities of the paper machines are increased up to 40%.
PB  - Editura Acad Romane, Bucuresti
T2  - Cellulose Chemistry and Technology
T1  - Application of modern technology in the production of paper for saving energy
EP  - 153
IS  - 1-2
SP  - 145
VL  - 32
UR  - https://hdl.handle.net/21.15107/rcub_technorep_197
ER  - 

@article{
author = "Krgović, Milorad and Borna, Nadežda V. and Živković, Predrag M. and Krgović, Milun and Uskoković, Petar",
year = "1998",
abstract = "All researches conducted with the objective of energy savings in paper industry point out that today in Yugoslavia and South East Europe this industrial branch consumes 30-40% more specific energy than Western Europe. The reason lies in the obsolete technology and in insufficient technical discipline. This study implies application of new technologies in which all investments are paid back within 1 to 15 months and the capacities of the paper machines are increased up to 40%.",
publisher = "Editura Acad Romane, Bucuresti",
journal = "Cellulose Chemistry and Technology",
title = "Application of modern technology in the production of paper for saving energy",
pages = "153-145",
number = "1-2",
volume = "32",
url = "https://hdl.handle.net/21.15107/rcub_technorep_197"
}

Krgović, M., Borna, N. V., Živković, P. M., Krgović, M.,& Uskoković, P.. (1998). Application of modern technology in the production of paper for saving energy. in Cellulose Chemistry and Technology
Editura Acad Romane, Bucuresti., 32(1-2), 145-153.
https://hdl.handle.net/21.15107/rcub_technorep_197

Krgović M, Borna NV, Živković PM, Krgović M, Uskoković P. Application of modern technology in the production of paper for saving energy. in Cellulose Chemistry and Technology. 1998;32(1-2):145-153.
https://hdl.handle.net/21.15107/rcub_technorep_197 .

Krgović, Milorad, Borna, Nadežda V., Živković, Predrag M., Krgović, Milun, Uskoković, Petar, "Application of modern technology in the production of paper for saving energy" in Cellulose Chemistry and Technology, 32, no. 1-2 (1998):145-153,
https://hdl.handle.net/21.15107/rcub_technorep_197 .

TY  - JOUR
AU  - Krgović, Milorad
AU  - Tomović, Miloš
AU  - Živković, Predrag
AU  - Uskoković, Petar
AU  - Borna, Nadežda V.
PY  - 1998
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/196
AB  - Fibre refining is one of the most important stages of mechanical and chemical fibre treatment with direct impact on the quality of the final product-paper. The raw material to be refined and the requirements regarding the final product quality determine the way and technology of refining (concentration, pH, pressure in the refiners, ratio of refining), arrangements of plates, rotor rotation number and micro frequency between the grooves and plates. In addition to these factors, influencing paper quality, the cost of fibre refining, i.e. specific energy consumption, is of equal importance. This research was developed in two directions: examination of the refining quality and specific energy consumption during refining. The plates made at the Faculty of Technology and Metallurgy in accordance with our own technology were cast in molds made of coated sand (sand coated with resin). These molds were zirconium coated before casting. Zirconium from the coat microalloys the molded material, thus essentially affecting the structure as well as hardness which, on the other band, influences the teeth sharpness after grinding. This affects the life of the refiner plates as well as the refining quality of pulp. The molds made of coated sand give refiner plates with smooth and flat surfaces, influencing the pulp flow and reducing the resistance of the pulp flow through the interteeth space of the refiner plates.
PB  - Editura Acad Romane, Bucuresti
T2  - Cellulose Chemistry and Technology
T1  - Impact of plate types on refining and specific energy consumption
EP  - 543
IS  - 5-6
SP  - 535
VL  - 32
UR  - https://hdl.handle.net/21.15107/rcub_technorep_196
ER  - 

@article{
author = "Krgović, Milorad and Tomović, Miloš and Živković, Predrag and Uskoković, Petar and Borna, Nadežda V.",
year = "1998",
abstract = "Fibre refining is one of the most important stages of mechanical and chemical fibre treatment with direct impact on the quality of the final product-paper. The raw material to be refined and the requirements regarding the final product quality determine the way and technology of refining (concentration, pH, pressure in the refiners, ratio of refining), arrangements of plates, rotor rotation number and micro frequency between the grooves and plates. In addition to these factors, influencing paper quality, the cost of fibre refining, i.e. specific energy consumption, is of equal importance. This research was developed in two directions: examination of the refining quality and specific energy consumption during refining. The plates made at the Faculty of Technology and Metallurgy in accordance with our own technology were cast in molds made of coated sand (sand coated with resin). These molds were zirconium coated before casting. Zirconium from the coat microalloys the molded material, thus essentially affecting the structure as well as hardness which, on the other band, influences the teeth sharpness after grinding. This affects the life of the refiner plates as well as the refining quality of pulp. The molds made of coated sand give refiner plates with smooth and flat surfaces, influencing the pulp flow and reducing the resistance of the pulp flow through the interteeth space of the refiner plates.",
publisher = "Editura Acad Romane, Bucuresti",
journal = "Cellulose Chemistry and Technology",
title = "Impact of plate types on refining and specific energy consumption",
pages = "543-535",
number = "5-6",
volume = "32",
url = "https://hdl.handle.net/21.15107/rcub_technorep_196"
}

Krgović, M., Tomović, M., Živković, P., Uskoković, P.,& Borna, N. V.. (1998). Impact of plate types on refining and specific energy consumption. in Cellulose Chemistry and Technology
Editura Acad Romane, Bucuresti., 32(5-6), 535-543.
https://hdl.handle.net/21.15107/rcub_technorep_196

Krgović M, Tomović M, Živković P, Uskoković P, Borna NV. Impact of plate types on refining and specific energy consumption. in Cellulose Chemistry and Technology. 1998;32(5-6):535-543.
https://hdl.handle.net/21.15107/rcub_technorep_196 .

Krgović, Milorad, Tomović, Miloš, Živković, Predrag, Uskoković, Petar, Borna, Nadežda V., "Impact of plate types on refining and specific energy consumption" in Cellulose Chemistry and Technology, 32, no. 5-6 (1998):535-543,
https://hdl.handle.net/21.15107/rcub_technorep_196 .