TY  - JOUR
AU  - Zec, Jelena
AU  - Tomić, Nataša
AU  - Vuksanović, Marija M.
AU  - Veljović, Đorđe
AU  - Stojanović, Dušica
AU  - Jančić-Heinemann, Radmila
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3808
AB  - Aluminijum oksidna (Al2O3) nanovlakna pripremljena su iz vodenog rastvora aluminijum hlorohidrata/poli(vinil alkohola) (PVA) korišćenjem tehnike elektropredenja. Maseni odnos aluminijum hlorohidrata/PVA bio je 5:1. Nakon kalcinacije vlakana na 1100 °C, dobijena su kratka aluminijum oksidna vlakna prečnika od 200 do 800 nm. Morfologija vlakana je karakterisana pomoću skenirajućeg elektronskog mikroskopa sa emisijom polja (FE-SEM). Softver za analizu slike Image ProPlus korišćen je za merenje prečnika dobijenih Al2O3 vlakana. Cilj ovog rada bio je ispitivanje mehaničkih svojstava hibridnog kompozita, koji se sastoji od polimerne matrice (kopolimer etilena i vinil-acetata (EVA)), polietilenskih vlakana ultra-visoke molarne mase (UHMWPE) i Al2O3 vlakana dobijenih elektropredenjem. Al2O3 vlakna su dodavana u količini od 1 mas. % što je pokazalo poboljšanje mehaničkih svojstava matrice i hibridnog kompozita.
AB  - Alumina (Al2O3) nano fibers are prepared from an aqueous solution of aluminum hydroxy chloride/poly (vinyl alcohol) (PVA)/water using the electrospinning technique. The weight ratio of aluminum hydroxy chloride/PVA was 5: 1. After calcification of fibers at 1100 ° C, continuous aluminum oxide fibers were obtained from 200 to 800 nm. The fiber morphology is characterized by a scanning electron microscope (SEM). Image analysis software (Image Pro Plus) was used to measure the diameter of the obtained aluminum oxide (Al2O3) fibers. The aim of this paper is to examine the mechanical properties of the hybrid composite, consisting of a polymer matrix (ethylene and vinyl acetate copolymer (EVA)), ultrahigh molecular weight polyethylene fibers (UHMWPE) and Al2O3 fibers obtained by electrospinning. Al2O3 fibers were added in an amount of 1 wt. % as shown by the improvement of the mechanical properties of the matrix and the hybrid composite.
PB  - Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Mehanička svojstva hibridnog kompozita UHMWPE/EVA ojačanog vlaknima dobijenim elektropredenjem
T1  - Mechanical properties of UHMWPE/EVA hybrid composite reinforced with fibers obtained by electrospinning
EP  - 761
IS  - 6
SP  - 757
VL  - 73
DO  - 10.5937/tehnika1806757Z
ER  - 

@article{
author = "Zec, Jelena and Tomić, Nataša and Vuksanović, Marija M. and Veljović, Đorđe and Stojanović, Dušica and Jančić-Heinemann, Radmila",
year = "2018",
abstract = "Aluminijum oksidna (Al2O3) nanovlakna pripremljena su iz vodenog rastvora aluminijum hlorohidrata/poli(vinil alkohola) (PVA) korišćenjem tehnike elektropredenja. Maseni odnos aluminijum hlorohidrata/PVA bio je 5:1. Nakon kalcinacije vlakana na 1100 °C, dobijena su kratka aluminijum oksidna vlakna prečnika od 200 do 800 nm. Morfologija vlakana je karakterisana pomoću skenirajućeg elektronskog mikroskopa sa emisijom polja (FE-SEM). Softver za analizu slike Image ProPlus korišćen je za merenje prečnika dobijenih Al2O3 vlakana. Cilj ovog rada bio je ispitivanje mehaničkih svojstava hibridnog kompozita, koji se sastoji od polimerne matrice (kopolimer etilena i vinil-acetata (EVA)), polietilenskih vlakana ultra-visoke molarne mase (UHMWPE) i Al2O3 vlakana dobijenih elektropredenjem. Al2O3 vlakna su dodavana u količini od 1 mas. % što je pokazalo poboljšanje mehaničkih svojstava matrice i hibridnog kompozita., Alumina (Al2O3) nano fibers are prepared from an aqueous solution of aluminum hydroxy chloride/poly (vinyl alcohol) (PVA)/water using the electrospinning technique. The weight ratio of aluminum hydroxy chloride/PVA was 5: 1. After calcification of fibers at 1100 ° C, continuous aluminum oxide fibers were obtained from 200 to 800 nm. The fiber morphology is characterized by a scanning electron microscope (SEM). Image analysis software (Image Pro Plus) was used to measure the diameter of the obtained aluminum oxide (Al2O3) fibers. The aim of this paper is to examine the mechanical properties of the hybrid composite, consisting of a polymer matrix (ethylene and vinyl acetate copolymer (EVA)), ultrahigh molecular weight polyethylene fibers (UHMWPE) and Al2O3 fibers obtained by electrospinning. Al2O3 fibers were added in an amount of 1 wt. % as shown by the improvement of the mechanical properties of the matrix and the hybrid composite.",
publisher = "Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Mehanička svojstva hibridnog kompozita UHMWPE/EVA ojačanog vlaknima dobijenim elektropredenjem, Mechanical properties of UHMWPE/EVA hybrid composite reinforced with fibers obtained by electrospinning",
pages = "761-757",
number = "6",
volume = "73",
doi = "10.5937/tehnika1806757Z"
}

Zec, J., Tomić, N., Vuksanović, M. M., Veljović, Đ., Stojanović, D.,& Jančić-Heinemann, R.. (2018). Mehanička svojstva hibridnog kompozita UHMWPE/EVA ojačanog vlaknima dobijenim elektropredenjem. in Tehnika
Savez inženjera i tehničara Srbije., 73(6), 757-761.
https://doi.org/10.5937/tehnika1806757Z

Zec J, Tomić N, Vuksanović MM, Veljović Đ, Stojanović D, Jančić-Heinemann R. Mehanička svojstva hibridnog kompozita UHMWPE/EVA ojačanog vlaknima dobijenim elektropredenjem. in Tehnika. 2018;73(6):757-761.
doi:10.5937/tehnika1806757Z .

Zec, Jelena, Tomić, Nataša, Vuksanović, Marija M., Veljović, Đorđe, Stojanović, Dušica, Jančić-Heinemann, Radmila, "Mehanička svojstva hibridnog kompozita UHMWPE/EVA ojačanog vlaknima dobijenim elektropredenjem" in Tehnika, 73, no. 6 (2018):757-761,
https://doi.org/10.5937/tehnika1806757Z . .

TY  - JOUR
AU  - Zec, Jelena
AU  - Tomić, Nataša
AU  - Zrilić, Milorad
AU  - Marković, Smilja
AU  - Stojanović, Dušica
AU  - Jančić-Heinemann, Radmila
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4031
AB  - Processing of hybrid composites represents a challenge for engineers where the aim is to establish compatibility among several materials. The aim of this study is to evaluate the effects of different sizes and morphologies of alumina fillers on the mechanical and thermal properties of the composite fibres based on ultra-high molecular weight polyethylene fibres (UHMWPE). These fibres have an outstanding elastic modulus and they are compatible with nonpolar sequences of the poly(ethylene-co-vinyl acetate) (EVA) matrix. Compared to the fibres, inferior mechanical properties of the matrix can be improved using alumina particles. Commercial aluminium oxide (Al2O3) nanoparticles, commercial whiskers and synthesized particles of Al2O3 doped with iron oxide, incorporated in different weight percentages, were used as fillers. The UHMWPE fibres were impregnated using the solution of EVA in toluene with dispersed particles. Fourier transform infrared spectroscopy and field emission scanning electron microscope were used for structural examination. Tensile testing revealed increasing of modulus of elasticity and strengths of obtained hybrid composite fibres. Thermal gravimetry showed improved thermal stability up to 350 degrees C of the hybrid composite fibres with alumina particles doped with iron oxide. Results of tested samples showed that the best mechanical properties were for hybrid composite fibres with 1 wt% of iron doped alumina filler.
PB  - Sage Publications Ltd, London
T2  - Journal of Thermoplastic Composite Materials
T1  - Processing and characterization of UHMWPE composite fibres with alumina particles in poly(ethylene-vinyl acetate) matrix
EP  - 708
IS  - 5
SP  - 689
VL  - 31
DO  - 10.1177/0892705717718240
ER  - 

@article{
author = "Zec, Jelena and Tomić, Nataša and Zrilić, Milorad and Marković, Smilja and Stojanović, Dušica and Jančić-Heinemann, Radmila",
year = "2018",
abstract = "Processing of hybrid composites represents a challenge for engineers where the aim is to establish compatibility among several materials. The aim of this study is to evaluate the effects of different sizes and morphologies of alumina fillers on the mechanical and thermal properties of the composite fibres based on ultra-high molecular weight polyethylene fibres (UHMWPE). These fibres have an outstanding elastic modulus and they are compatible with nonpolar sequences of the poly(ethylene-co-vinyl acetate) (EVA) matrix. Compared to the fibres, inferior mechanical properties of the matrix can be improved using alumina particles. Commercial aluminium oxide (Al2O3) nanoparticles, commercial whiskers and synthesized particles of Al2O3 doped with iron oxide, incorporated in different weight percentages, were used as fillers. The UHMWPE fibres were impregnated using the solution of EVA in toluene with dispersed particles. Fourier transform infrared spectroscopy and field emission scanning electron microscope were used for structural examination. Tensile testing revealed increasing of modulus of elasticity and strengths of obtained hybrid composite fibres. Thermal gravimetry showed improved thermal stability up to 350 degrees C of the hybrid composite fibres with alumina particles doped with iron oxide. Results of tested samples showed that the best mechanical properties were for hybrid composite fibres with 1 wt% of iron doped alumina filler.",
publisher = "Sage Publications Ltd, London",
journal = "Journal of Thermoplastic Composite Materials",
title = "Processing and characterization of UHMWPE composite fibres with alumina particles in poly(ethylene-vinyl acetate) matrix",
pages = "708-689",
number = "5",
volume = "31",
doi = "10.1177/0892705717718240"
}

Zec, J., Tomić, N., Zrilić, M., Marković, S., Stojanović, D.,& Jančić-Heinemann, R.. (2018). Processing and characterization of UHMWPE composite fibres with alumina particles in poly(ethylene-vinyl acetate) matrix. in Journal of Thermoplastic Composite Materials
Sage Publications Ltd, London., 31(5), 689-708.
https://doi.org/10.1177/0892705717718240

Zec J, Tomić N, Zrilić M, Marković S, Stojanović D, Jančić-Heinemann R. Processing and characterization of UHMWPE composite fibres with alumina particles in poly(ethylene-vinyl acetate) matrix. in Journal of Thermoplastic Composite Materials. 2018;31(5):689-708.
doi:10.1177/0892705717718240 .

Zec, Jelena, Tomić, Nataša, Zrilić, Milorad, Marković, Smilja, Stojanović, Dušica, Jančić-Heinemann, Radmila, "Processing and characterization of UHMWPE composite fibres with alumina particles in poly(ethylene-vinyl acetate) matrix" in Journal of Thermoplastic Composite Materials, 31, no. 5 (2018):689-708,
https://doi.org/10.1177/0892705717718240 . .

TY  - JOUR
AU  - Zec, Jelena
AU  - Tomić, Nataša
AU  - Vuksanović, Marija M.
AU  - Jančić-Heinemann, Radmila
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3812
AB  - The aim of this paper is to investigate the mechanical properties of hybrid composites with the polymer matrix of the copolymer of ethylene and vinyl acetate (EVA), ultra high molecular weight polyethylene fibers (UHMWPE) and particles based on aluminum oxide. Commercial aluminum oxide nanoparticles and aluminum oxide particles obtained by sol-gel technique were used as fillers in a proportion of 1, 3 and 5 wt. %. Infrared spectroscopy with Fourier Transformation (FTIR) and Scanning Electron Microscopy (SEM) were used to test the chemical structure and microstructure of hybrid composites, respectively. The tensile test showed an increase in the modulus of elasticity and the tensile strength of the obtained hybrid composites. The results of the sample testing showed that the best mechanical properties and toughness of the material shows hybrid composites with 1 mass. % micron particles of aluminum oxide.
AB  - Cilj ovoga rada je ispitivanje mehaničkih svojstava hibridnih kompozita sa polimernom matricom, matrice kopolimera etilena i vinil-acetata (EVA), polietilenskih vlakana ultra visoke molarne mase (UHMWPE) i čestica na bazi aluminijum oksida. Komercijalne nanočestice aluminijum oksida i čestice aluminijum oksida dobijene sol-gel tehnikom korišćene su kao punioci u udelu od 1, 3 i 5 mas. %. Infracrvena spektroskopija sa Furijeovom transformacijom (FTIR) i skenirajuća elektronska mikroskopija (SEM) korišćene su za ispitivanje hemijske strukture i mikrostrukture hibridnih kompozita, datim redom. Ispitivanje na zatezanje pokazalo je povećanje modula elastičnosti i zatezne čvrstoće dobijenih hibridnih kompozita. Rezultati ispitivanja uzoraka pokazali su da najbolja mehanička svojstva i žilavost materijala pokazuje hibridni kompoziti sa 1 mas. % mikronskihčestica aluminijum oksida.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Effect of AL2O3 particles on the toughness of hybrid composite with EVA matrix and UHMWPE fibersas reinforcement
T1  - Uticaj AL2O3 čestica na žilavost hibridnog kompozita sa EVA matricom ojačanog UHMWPE vlaknima
EP  - 324
IS  - 3
SP  - 319
VL  - 73
DO  - 10.5937/tehnika1803319Z
ER  - 

@article{
author = "Zec, Jelena and Tomić, Nataša and Vuksanović, Marija M. and Jančić-Heinemann, Radmila",
year = "2018",
abstract = "The aim of this paper is to investigate the mechanical properties of hybrid composites with the polymer matrix of the copolymer of ethylene and vinyl acetate (EVA), ultra high molecular weight polyethylene fibers (UHMWPE) and particles based on aluminum oxide. Commercial aluminum oxide nanoparticles and aluminum oxide particles obtained by sol-gel technique were used as fillers in a proportion of 1, 3 and 5 wt. %. Infrared spectroscopy with Fourier Transformation (FTIR) and Scanning Electron Microscopy (SEM) were used to test the chemical structure and microstructure of hybrid composites, respectively. The tensile test showed an increase in the modulus of elasticity and the tensile strength of the obtained hybrid composites. The results of the sample testing showed that the best mechanical properties and toughness of the material shows hybrid composites with 1 mass. % micron particles of aluminum oxide., Cilj ovoga rada je ispitivanje mehaničkih svojstava hibridnih kompozita sa polimernom matricom, matrice kopolimera etilena i vinil-acetata (EVA), polietilenskih vlakana ultra visoke molarne mase (UHMWPE) i čestica na bazi aluminijum oksida. Komercijalne nanočestice aluminijum oksida i čestice aluminijum oksida dobijene sol-gel tehnikom korišćene su kao punioci u udelu od 1, 3 i 5 mas. %. Infracrvena spektroskopija sa Furijeovom transformacijom (FTIR) i skenirajuća elektronska mikroskopija (SEM) korišćene su za ispitivanje hemijske strukture i mikrostrukture hibridnih kompozita, datim redom. Ispitivanje na zatezanje pokazalo je povećanje modula elastičnosti i zatezne čvrstoće dobijenih hibridnih kompozita. Rezultati ispitivanja uzoraka pokazali su da najbolja mehanička svojstva i žilavost materijala pokazuje hibridni kompoziti sa 1 mas. % mikronskihčestica aluminijum oksida.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Effect of AL2O3 particles on the toughness of hybrid composite with EVA matrix and UHMWPE fibersas reinforcement, Uticaj AL2O3 čestica na žilavost hibridnog kompozita sa EVA matricom ojačanog UHMWPE vlaknima",
pages = "324-319",
number = "3",
volume = "73",
doi = "10.5937/tehnika1803319Z"
}

Zec, J., Tomić, N., Vuksanović, M. M.,& Jančić-Heinemann, R.. (2018). Effect of AL2O3 particles on the toughness of hybrid composite with EVA matrix and UHMWPE fibersas reinforcement. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 73(3), 319-324.
https://doi.org/10.5937/tehnika1803319Z

Zec J, Tomić N, Vuksanović MM, Jančić-Heinemann R. Effect of AL2O3 particles on the toughness of hybrid composite with EVA matrix and UHMWPE fibersas reinforcement. in Tehnika. 2018;73(3):319-324.
doi:10.5937/tehnika1803319Z .

Zec, Jelena, Tomić, Nataša, Vuksanović, Marija M., Jančić-Heinemann, Radmila, "Effect of AL2O3 particles on the toughness of hybrid composite with EVA matrix and UHMWPE fibersas reinforcement" in Tehnika, 73, no. 3 (2018):319-324,
https://doi.org/10.5937/tehnika1803319Z . .

TY  - JOUR
AU  - Zec, Jelena
AU  - Tomić, Nataša
AU  - Zrilić, Milorad
AU  - Lević, Steva
AU  - Marinković, Aleksandar
AU  - Jančić-Heinemann, Radmila
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3935
AB  - Ultra-high molecular weight polyethylene (UHMWPE, PE)/oxidized PE (ox-PE) fibers and alumina reinforcement were used in preparation of poly (ethylene-co-vinyl acetate) (EVA)/hydrolyzed EVA (EVAOH) based composites. Different alumina particles were used: nanoparticles (n-Al2O3), whiskers (w-Al2O3), synthesized (mu-Al2O3) and the one doped with iron oxide (Fe-Al2O3). Modification of alumina with (3-glycidyloxypropyl)trimethoxysilane (GLYMO), without pretreatment (S) and subjected to hydrolysis (HS), produced Al2O3/S and Al2O3/HS particles. Optical microscopy was employed in determination of system compatibility. A high increase in tensile strength with 3% Fe-Al2O3/HS and n-Al2O3/HS was a result of improved Al2O3/matrix interfacial interactions in PE/EVAOH based composite.
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties
EP  - 48
SP  - 36
VL  - 153
DO  - 10.1016/j.compositesb.2018.07.031
ER  - 

@article{
author = "Zec, Jelena and Tomić, Nataša and Zrilić, Milorad and Lević, Steva and Marinković, Aleksandar and Jančić-Heinemann, Radmila",
year = "2018",
abstract = "Ultra-high molecular weight polyethylene (UHMWPE, PE)/oxidized PE (ox-PE) fibers and alumina reinforcement were used in preparation of poly (ethylene-co-vinyl acetate) (EVA)/hydrolyzed EVA (EVAOH) based composites. Different alumina particles were used: nanoparticles (n-Al2O3), whiskers (w-Al2O3), synthesized (mu-Al2O3) and the one doped with iron oxide (Fe-Al2O3). Modification of alumina with (3-glycidyloxypropyl)trimethoxysilane (GLYMO), without pretreatment (S) and subjected to hydrolysis (HS), produced Al2O3/S and Al2O3/HS particles. Optical microscopy was employed in determination of system compatibility. A high increase in tensile strength with 3% Fe-Al2O3/HS and n-Al2O3/HS was a result of improved Al2O3/matrix interfacial interactions in PE/EVAOH based composite.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties",
pages = "48-36",
volume = "153",
doi = "10.1016/j.compositesb.2018.07.031"
}

Zec, J., Tomić, N., Zrilić, M., Lević, S., Marinković, A.,& Jančić-Heinemann, R.. (2018). Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 153, 36-48.
https://doi.org/10.1016/j.compositesb.2018.07.031

Zec J, Tomić N, Zrilić M, Lević S, Marinković A, Jančić-Heinemann R. Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties. in Composites Part B-Engineering. 2018;153:36-48.
doi:10.1016/j.compositesb.2018.07.031 .

Zec, Jelena, Tomić, Nataša, Zrilić, Milorad, Lević, Steva, Marinković, Aleksandar, Jančić-Heinemann, Radmila, "Optimization of Al2O3 particle modification and UHMWPE fiber oxidation of EVA based hybrid composites: Compatibility, morphological and mechanical properties" in Composites Part B-Engineering, 153 (2018):36-48,
https://doi.org/10.1016/j.compositesb.2018.07.031 . .