TY  - JOUR
AU  - Ilić, Svetlana M.
AU  - Zec, Slavica
AU  - Miljković, Miroslav
AU  - Poleti, Dejan
AU  - Pošarac-Marković, Milica B.
AU  - Janaćković, Đorđe
AU  - Matović, Branko
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2687
AB  - Amorphous powders of iron doped 3:2 mullite (3Al(2)O(3)center dot 2SiO(2)) were prepared by sol-gel combustion process using ethanol-water solutions of Al(III) nitrate, Fe(III) nitrate, TEOS and urea. Compositions up to 15 wt% of Fe2O3 were investigated. After combustion and heat treatment at 800 degrees C for 4 h, XRD analysis confirmed that the powders were amorphous. This is in agreement with the thermodynamic predictions that direct formation of mullite has not occurred during the aluminum nitrate - urea combustion reaction. XRD patterns of uniaxially pressed and sintered pellets at 1550 degrees C for 4 h revealed the crystal structure of orthorhombic mullite. The lattice parameters and unit cell volume increases as the mullite solid solutions were enriched by iron. The TGA/DSC analysis showed the reducing of crystallization temperature of iron doped mullites with increasing of iron content in reaction mixtures. The mullitization reaction is two-step process including formation of transient spinel phase below 1000 degrees C and mullite crystallization at temperatures about 1200 degrees C. The SEM micrographs of the sintered samples reveal elongated mullite grains with grain length up to 40 mu m. Increasing of the iron content in the reaction mixture enhances the grain size and the grains become elongated and better packed increasing the density of sintered samples.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Sol-gel synthesis and characterization of iron doped mullite
EP  - 264
SP  - 259
VL  - 612
DO  - 10.1016/j.jallcom.2014.05.204
ER  - 

@article{
author = "Ilić, Svetlana M. and Zec, Slavica and Miljković, Miroslav and Poleti, Dejan and Pošarac-Marković, Milica B. and Janaćković, Đorđe and Matović, Branko",
year = "2014",
abstract = "Amorphous powders of iron doped 3:2 mullite (3Al(2)O(3)center dot 2SiO(2)) were prepared by sol-gel combustion process using ethanol-water solutions of Al(III) nitrate, Fe(III) nitrate, TEOS and urea. Compositions up to 15 wt% of Fe2O3 were investigated. After combustion and heat treatment at 800 degrees C for 4 h, XRD analysis confirmed that the powders were amorphous. This is in agreement with the thermodynamic predictions that direct formation of mullite has not occurred during the aluminum nitrate - urea combustion reaction. XRD patterns of uniaxially pressed and sintered pellets at 1550 degrees C for 4 h revealed the crystal structure of orthorhombic mullite. The lattice parameters and unit cell volume increases as the mullite solid solutions were enriched by iron. The TGA/DSC analysis showed the reducing of crystallization temperature of iron doped mullites with increasing of iron content in reaction mixtures. The mullitization reaction is two-step process including formation of transient spinel phase below 1000 degrees C and mullite crystallization at temperatures about 1200 degrees C. The SEM micrographs of the sintered samples reveal elongated mullite grains with grain length up to 40 mu m. Increasing of the iron content in the reaction mixture enhances the grain size and the grains become elongated and better packed increasing the density of sintered samples.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Sol-gel synthesis and characterization of iron doped mullite",
pages = "264-259",
volume = "612",
doi = "10.1016/j.jallcom.2014.05.204"
}

Ilić, S. M., Zec, S., Miljković, M., Poleti, D., Pošarac-Marković, M. B., Janaćković, Đ.,& Matović, B.. (2014). Sol-gel synthesis and characterization of iron doped mullite. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 612, 259-264.
https://doi.org/10.1016/j.jallcom.2014.05.204

Ilić SM, Zec S, Miljković M, Poleti D, Pošarac-Marković MB, Janaćković Đ, Matović B. Sol-gel synthesis and characterization of iron doped mullite. in Journal of Alloys and Compounds. 2014;612:259-264.
doi:10.1016/j.jallcom.2014.05.204 .

Ilić, Svetlana M., Zec, Slavica, Miljković, Miroslav, Poleti, Dejan, Pošarac-Marković, Milica B., Janaćković, Đorđe, Matović, Branko, "Sol-gel synthesis and characterization of iron doped mullite" in Journal of Alloys and Compounds, 612 (2014):259-264,
https://doi.org/10.1016/j.jallcom.2014.05.204 . .

TY  - JOUR
AU  - Jokanović, Vukoman
AU  - Dramićanin, Miroslav
AU  - Andrić, Z.
AU  - Dramićanin, Tatjana
AU  - Plavšić, Milenko B.
AU  - Pašalić, Snežana
AU  - Miljković, Miroslav
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1321
AB  - A new approach to the two-level design and self-assembling of MexSiOy (Me = Gd, Y and Ca or their mixtures) nano-powders from SiO2 sols is described. The nanostructure design of various optical active materials based on different compounds of Me(x)Sio(y) is discussed. These particles were formed by the combination of hydrothermal synthesis and ultrasound spray pyrolysis. The morphology and structural design of the particles and sub-particles are defined by their synthesis procedure and processing parameters. The mean particle size and size distribution of all the MexSiOy based compounds were determined by SEM analysis. These results were compared with the particle diameter evaluated from the theoretical model of the breaking-up of capillary waves. For all the synthesized powders, the obtained results indicate the possibility of a rigorous design of the structure of the particles throughout their entire hierarchy.
PB  - Elsevier, Amsterdam
T2  - Optical Materials
T1  - Nanostructure designed powders of optical active materials MexSiOy obtained by ultrasonic spray pyrolysis
EP  - 1172
IS  - 7
SP  - 1168
VL  - 30
DO  - 10.1016/j.optmat.2007.05.043
ER  - 

@article{
author = "Jokanović, Vukoman and Dramićanin, Miroslav and Andrić, Z. and Dramićanin, Tatjana and Plavšić, Milenko B. and Pašalić, Snežana and Miljković, Miroslav",
year = "2008",
abstract = "A new approach to the two-level design and self-assembling of MexSiOy (Me = Gd, Y and Ca or their mixtures) nano-powders from SiO2 sols is described. The nanostructure design of various optical active materials based on different compounds of Me(x)Sio(y) is discussed. These particles were formed by the combination of hydrothermal synthesis and ultrasound spray pyrolysis. The morphology and structural design of the particles and sub-particles are defined by their synthesis procedure and processing parameters. The mean particle size and size distribution of all the MexSiOy based compounds were determined by SEM analysis. These results were compared with the particle diameter evaluated from the theoretical model of the breaking-up of capillary waves. For all the synthesized powders, the obtained results indicate the possibility of a rigorous design of the structure of the particles throughout their entire hierarchy.",
publisher = "Elsevier, Amsterdam",
journal = "Optical Materials",
title = "Nanostructure designed powders of optical active materials MexSiOy obtained by ultrasonic spray pyrolysis",
pages = "1172-1168",
number = "7",
volume = "30",
doi = "10.1016/j.optmat.2007.05.043"
}

Jokanović, V., Dramićanin, M., Andrić, Z., Dramićanin, T., Plavšić, M. B., Pašalić, S.,& Miljković, M.. (2008). Nanostructure designed powders of optical active materials MexSiOy obtained by ultrasonic spray pyrolysis. in Optical Materials
Elsevier, Amsterdam., 30(7), 1168-1172.
https://doi.org/10.1016/j.optmat.2007.05.043

Jokanović V, Dramićanin M, Andrić Z, Dramićanin T, Plavšić MB, Pašalić S, Miljković M. Nanostructure designed powders of optical active materials MexSiOy obtained by ultrasonic spray pyrolysis. in Optical Materials. 2008;30(7):1168-1172.
doi:10.1016/j.optmat.2007.05.043 .

Jokanović, Vukoman, Dramićanin, Miroslav, Andrić, Z., Dramićanin, Tatjana, Plavšić, Milenko B., Pašalić, Snežana, Miljković, Miroslav, "Nanostructure designed powders of optical active materials MexSiOy obtained by ultrasonic spray pyrolysis" in Optical Materials, 30, no. 7 (2008):1168-1172,
https://doi.org/10.1016/j.optmat.2007.05.043 . .

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Nastasović, Aleksandra
AU  - Laninović, Verica
AU  - Onjia, Antonije
AU  - Miljković, Miroslav
AU  - Konstantinović, V
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/674
AB  - Bioresorbable barrier membranes have been widely used in dentistry and maxillofacial surgery. When the membranes are placed over bony defects and are closely adapted by the surrounding bone face, an environment that prevents invasion of competing non-osteogenetic cells from the overlying soft tissues can be created. The aim of the present study was to establish whether the production procedure of different polymeric and composite membranes affects their physicochemical properties. The physicochemical properties were examined by differential scanning calorimetry (DSC), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), inverse gas chromatography (lGC) and tensile strength test (TST). The surface microstructure, dependent on the processing parameters, was perforated with smaller or larger pores. The dispersive component of the free surface energy decreased by adding bicalcium phosphate (BCP) to the polymer and, consequently, non-polar interactions with the surroundings became preferential.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
T2  - Progress in Advanced Materials and Processes
T1  - Preparation and properties of polymeric and composite bioresorbable barrier membranes
EP  - 542
SP  - 537
VL  - 453-454
DO  - 10.4028/www.scientific.net/MSF.453-454.537
ER  - 

@article{
author = "Ignjatović, Nenad and Nastasović, Aleksandra and Laninović, Verica and Onjia, Antonije and Miljković, Miroslav and Konstantinović, V",
year = "2004",
abstract = "Bioresorbable barrier membranes have been widely used in dentistry and maxillofacial surgery. When the membranes are placed over bony defects and are closely adapted by the surrounding bone face, an environment that prevents invasion of competing non-osteogenetic cells from the overlying soft tissues can be created. The aim of the present study was to establish whether the production procedure of different polymeric and composite membranes affects their physicochemical properties. The physicochemical properties were examined by differential scanning calorimetry (DSC), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), inverse gas chromatography (lGC) and tensile strength test (TST). The surface microstructure, dependent on the processing parameters, was perforated with smaller or larger pores. The dispersive component of the free surface energy decreased by adding bicalcium phosphate (BCP) to the polymer and, consequently, non-polar interactions with the surroundings became preferential.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Progress in Advanced Materials and Processes",
title = "Preparation and properties of polymeric and composite bioresorbable barrier membranes",
pages = "542-537",
volume = "453-454",
doi = "10.4028/www.scientific.net/MSF.453-454.537"
}

Ignjatović, N., Nastasović, A., Laninović, V., Onjia, A., Miljković, M.,& Konstantinović, V.. (2004). Preparation and properties of polymeric and composite bioresorbable barrier membranes. in Progress in Advanced Materials and Processes
Trans Tech Publications Ltd, Durnten-Zurich., 453-454, 537-542.
https://doi.org/10.4028/www.scientific.net/MSF.453-454.537

Ignjatović N, Nastasović A, Laninović V, Onjia A, Miljković M, Konstantinović V. Preparation and properties of polymeric and composite bioresorbable barrier membranes. in Progress in Advanced Materials and Processes. 2004;453-454:537-542.
doi:10.4028/www.scientific.net/MSF.453-454.537 .

Ignjatović, Nenad, Nastasović, Aleksandra, Laninović, Verica, Onjia, Antonije, Miljković, Miroslav, Konstantinović, V, "Preparation and properties of polymeric and composite bioresorbable barrier membranes" in Progress in Advanced Materials and Processes, 453-454 (2004):537-542,
https://doi.org/10.4028/www.scientific.net/MSF.453-454.537 . .

TY  - JOUR
AU  - Uskoković, Petar
AU  - Miljković, Miroslav
AU  - Krivokuca, M
AU  - Putić, Slaviša
AU  - Aleksić, Radoslav
PY  - 1999
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/226
AB  - Flexural deformation of the composite laminate and the integrity of the embedded optical fibres under three-point bending load were monitored. Signal attenuation in optical fibres was used as the damage indicator. The network of the specimen failure was primary dominated by fibre failure, low rate of transverse matrix cracks and internal delamination between two plies close to the tensile side. Scanning electron microscopy (SEM) was performed on the fracture surfaces of the mechanically failed samples to examine the interfaces between the optical fibres and host materials, and showed interface debonding in the acrylate coated system.
PB  - Sage Publications Ltd, London
T2  - Advanced Composites Letters
T1  - An intensity based optical fibre sensor for flexural damage detection in woven composites
EP  - 58
IS  - 2
SP  - 55
VL  - 8
DO  - 10.1177/096369359900800202
ER  - 

@article{
author = "Uskoković, Petar and Miljković, Miroslav and Krivokuca, M and Putić, Slaviša and Aleksić, Radoslav",
year = "1999",
abstract = "Flexural deformation of the composite laminate and the integrity of the embedded optical fibres under three-point bending load were monitored. Signal attenuation in optical fibres was used as the damage indicator. The network of the specimen failure was primary dominated by fibre failure, low rate of transverse matrix cracks and internal delamination between two plies close to the tensile side. Scanning electron microscopy (SEM) was performed on the fracture surfaces of the mechanically failed samples to examine the interfaces between the optical fibres and host materials, and showed interface debonding in the acrylate coated system.",
publisher = "Sage Publications Ltd, London",
journal = "Advanced Composites Letters",
title = "An intensity based optical fibre sensor for flexural damage detection in woven composites",
pages = "58-55",
number = "2",
volume = "8",
doi = "10.1177/096369359900800202"
}

Uskoković, P., Miljković, M., Krivokuca, M., Putić, S.,& Aleksić, R.. (1999). An intensity based optical fibre sensor for flexural damage detection in woven composites. in Advanced Composites Letters
Sage Publications Ltd, London., 8(2), 55-58.
https://doi.org/10.1177/096369359900800202

Uskoković P, Miljković M, Krivokuca M, Putić S, Aleksić R. An intensity based optical fibre sensor for flexural damage detection in woven composites. in Advanced Composites Letters. 1999;8(2):55-58.
doi:10.1177/096369359900800202 .

Uskoković, Petar, Miljković, Miroslav, Krivokuca, M, Putić, Slaviša, Aleksić, Radoslav, "An intensity based optical fibre sensor for flexural damage detection in woven composites" in Advanced Composites Letters, 8, no. 2 (1999):55-58,
https://doi.org/10.1177/096369359900800202 . .

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Tomić, S
AU  - Dakić, M
AU  - Miljković, Miroslav
AU  - Plavšić, Milenko B.
AU  - Uskoković, Dragan
PY  - 1999
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/267
AB  - Calcium hydroxyapatite (HAp) and poly-L-lactide (PLLA) were synthesized chemically. The obtained HAp was of high purity and, after special thermal treatment, of high crystallinity as well. Synthesis of PLLA was performed using L-lactide as a monomer and nontoxic initiator. In this way a polymer of large molar weight (about 400 000) was obtained. The HAp and PLLA obtained were used as constituents of the HAp/PLLA composite biomaterial, a potential material for implants. The composite was obtained by mixing completely dissolved PLLA with granules of HAp. The composite was compacted by cold and hot pressing at pressures of 49.0-490.5 MPa and temperatures of 20-184 degrees C. The material obtained at optimum process parameters had a density of 99.6% and compressive strength of 93.2 MPa.
PB  - Elsevier Sci Ltd, Oxford
T2  - Biomaterials
T1  - Synthesis and properties of hydroxyapatite/poly-L-lactide composite biomaterials
EP  - 816
IS  - 9
SP  - 809
VL  - 20
DO  - 10.1016/S0142-9612(98)00234-8
ER  - 

@article{
author = "Ignjatović, Nenad and Tomić, S and Dakić, M and Miljković, Miroslav and Plavšić, Milenko B. and Uskoković, Dragan",
year = "1999",
abstract = "Calcium hydroxyapatite (HAp) and poly-L-lactide (PLLA) were synthesized chemically. The obtained HAp was of high purity and, after special thermal treatment, of high crystallinity as well. Synthesis of PLLA was performed using L-lactide as a monomer and nontoxic initiator. In this way a polymer of large molar weight (about 400 000) was obtained. The HAp and PLLA obtained were used as constituents of the HAp/PLLA composite biomaterial, a potential material for implants. The composite was obtained by mixing completely dissolved PLLA with granules of HAp. The composite was compacted by cold and hot pressing at pressures of 49.0-490.5 MPa and temperatures of 20-184 degrees C. The material obtained at optimum process parameters had a density of 99.6% and compressive strength of 93.2 MPa.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Biomaterials",
title = "Synthesis and properties of hydroxyapatite/poly-L-lactide composite biomaterials",
pages = "816-809",
number = "9",
volume = "20",
doi = "10.1016/S0142-9612(98)00234-8"
}

Ignjatović, N., Tomić, S., Dakić, M., Miljković, M., Plavšić, M. B.,& Uskoković, D.. (1999). Synthesis and properties of hydroxyapatite/poly-L-lactide composite biomaterials. in Biomaterials
Elsevier Sci Ltd, Oxford., 20(9), 809-816.
https://doi.org/10.1016/S0142-9612(98)00234-8

Ignjatović N, Tomić S, Dakić M, Miljković M, Plavšić MB, Uskoković D. Synthesis and properties of hydroxyapatite/poly-L-lactide composite biomaterials. in Biomaterials. 1999;20(9):809-816.
doi:10.1016/S0142-9612(98)00234-8 .

Ignjatović, Nenad, Tomić, S, Dakić, M, Miljković, Miroslav, Plavšić, Milenko B., Uskoković, Dragan, "Synthesis and properties of hydroxyapatite/poly-L-lactide composite biomaterials" in Biomaterials, 20, no. 9 (1999):809-816,
https://doi.org/10.1016/S0142-9612(98)00234-8 . .

TY  - JOUR
AU  - Ignjatović, NL
AU  - Plavšić, Milenko B.
AU  - Miljković, Miroslav
AU  - Zivković, LM
AU  - Uskoković, Dragan
PY  - 1999
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/233
AB  - Besides its high osteoinductive properties, hydroxyapatite (HAp) exhibits a relatively low mechanical strength. In order to improve the mechanical properties and reliability of HAp based composites, the addition of selected polymers is highly recommended, The main objective of this work is to study the microstructural characteristics of HAp/poly-L-lactide (PLLA) composites obtained by cold or hot processing. The composites were prepared from a mixture of a chloroform solution of poly-L-lactide with granulated HAp. After elimination of chloroform by vacuum evaporation, dense compacts were obtained by cold or hot pressing. The pressing pressure ranged from 98.10 to 294.3 MPa for both cold and hot pressing, The hot pressing was performed in the temperature region 293-457 K for a time period of 15-60 min. Depending on the PLLA amount and the pressing procedure it is possible to obtain highly porous or nearly fully dense composites, The scanning electron microscopy examination of fracture as well as of free surfaces revealed that the final porosity and wetting are affected to a great extent by the synthesis conditions and amount of polymer added. An increase in temperature to 457 K for a longer period of time results in fully dense compacts, The formation of a nearly continuous polymer network that leads to the hardening of HAp has also been observed. However, it should be pointed out that some layers of HAp may be free of polymer film since PLLA penetrates more deeply into the porous HAp.
PB  - Wiley, Hoboken
T2  - Journal of Microscopy
T1  - Microstructural characteristics of calcium hydroxyapatite/poly-L-lactide based composites
EP  - 248
IS  - 2
SP  - 243
VL  - 196
DO  - 10.1046/j.1365-2818.1999.00623.x
ER  - 

@article{
author = "Ignjatović, NL and Plavšić, Milenko B. and Miljković, Miroslav and Zivković, LM and Uskoković, Dragan",
year = "1999",
abstract = "Besides its high osteoinductive properties, hydroxyapatite (HAp) exhibits a relatively low mechanical strength. In order to improve the mechanical properties and reliability of HAp based composites, the addition of selected polymers is highly recommended, The main objective of this work is to study the microstructural characteristics of HAp/poly-L-lactide (PLLA) composites obtained by cold or hot processing. The composites were prepared from a mixture of a chloroform solution of poly-L-lactide with granulated HAp. After elimination of chloroform by vacuum evaporation, dense compacts were obtained by cold or hot pressing. The pressing pressure ranged from 98.10 to 294.3 MPa for both cold and hot pressing, The hot pressing was performed in the temperature region 293-457 K for a time period of 15-60 min. Depending on the PLLA amount and the pressing procedure it is possible to obtain highly porous or nearly fully dense composites, The scanning electron microscopy examination of fracture as well as of free surfaces revealed that the final porosity and wetting are affected to a great extent by the synthesis conditions and amount of polymer added. An increase in temperature to 457 K for a longer period of time results in fully dense compacts, The formation of a nearly continuous polymer network that leads to the hardening of HAp has also been observed. However, it should be pointed out that some layers of HAp may be free of polymer film since PLLA penetrates more deeply into the porous HAp.",
publisher = "Wiley, Hoboken",
journal = "Journal of Microscopy",
title = "Microstructural characteristics of calcium hydroxyapatite/poly-L-lactide based composites",
pages = "248-243",
number = "2",
volume = "196",
doi = "10.1046/j.1365-2818.1999.00623.x"
}

Ignjatović, N., Plavšić, M. B., Miljković, M., Zivković, L.,& Uskoković, D.. (1999). Microstructural characteristics of calcium hydroxyapatite/poly-L-lactide based composites. in Journal of Microscopy
Wiley, Hoboken., 196(2), 243-248.
https://doi.org/10.1046/j.1365-2818.1999.00623.x

Ignjatović N, Plavšić MB, Miljković M, Zivković L, Uskoković D. Microstructural characteristics of calcium hydroxyapatite/poly-L-lactide based composites. in Journal of Microscopy. 1999;196(2):243-248.
doi:10.1046/j.1365-2818.1999.00623.x .

Ignjatović, NL, Plavšić, Milenko B., Miljković, Miroslav, Zivković, LM, Uskoković, Dragan, "Microstructural characteristics of calcium hydroxyapatite/poly-L-lactide based composites" in Journal of Microscopy, 196, no. 2 (1999):243-248,
https://doi.org/10.1046/j.1365-2818.1999.00623.x . .