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Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites

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2016
858.pdf (207.9Kb)
Authors
Živojinović, Jelena
Peleš, Adriana
Blagojević, Vladimir A.
Kosanović, Darko
Pavlović, Vladimir B.
Conference object (Published version)
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Abstract
Mechanical activation leads to the creation of new surfaces and decrease in particle size of the initial powder particles, which affects the crystallization of PVDF matrix. In addition, prolonged mechanical activation leads to agglomeration of nanoparticles agglomerates of different sizes. Microstructural changes due to mechanical activation in ZnO, BaTiO3, SrTiO3 and TiO2 powders were investigated using electron microscopy (TEM and SEM), x-ray diffraction (XRD) and particle size analysis (PSA). These were correlated with molecular simulations of mechanical properties of PVDF-nanocluster composites with different oxide nanocluster sizes (1, 1.5 and 2 nm) Each system was simulated using a periodic system of metal oxide nanocrystal inside β-PVDF matrix. β-PVDF was chosen for its superior properties over α- and γ- phases. Geometry of each system was optimized prior to the calculation of mechanical properties using GULP v4.3 software package. Molecular simulations show that, in gene...ral, mechanical properties (Young modulus as an indication of elasticity, Shear modulus as an indication of hardness) for all systems improve with decrease in nanocluster size. This suggests that mechanical activation of fillers in PVDF-metal oxide nanoparticle composites should have a positive effect on the mechanical properties of composite systems. This suggests mechanical activation as an easy an inexpensive method of improving mechanical properties of polymer-nanocrystal composite materials.

Keywords:
PVDF / mechanical activation / nanoparticles / composite materials
Source:
2016
Projects:
  • Electrochemical synthesis and characterization of nanostructured functional materials for application in new technologies (RS-172046)
[ Google Scholar ]
URI
http://dais.sanu.ac.rs/123456789/861
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - CONF
AU  - Živojinović, Jelena
AU  - Peleš, Adriana
AU  - Blagojević, Vladimir A.
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/861
AB  - Mechanical activation leads to the creation of new surfaces and decrease in particle size of the initial powder particles, which affects the crystallization of PVDF matrix.  In addition, prolonged mechanical activation leads to agglomeration of nanoparticles agglomerates of different sizes. 
Microstructural changes due to mechanical activation in ZnO, BaTiO3, SrTiO3 and TiO2 powders were investigated using electron microscopy (TEM and SEM), x-ray diffraction (XRD) and particle size analysis (PSA). These were correlated with molecular simulations of mechanical properties of PVDF-nanocluster composites with different oxide nanocluster sizes (1, 1.5 and 2 nm) 
Each system was simulated using a periodic system of metal oxide nanocrystal inside β-PVDF matrix. β-PVDF was chosen for its superior properties over α- and γ- phases. Geometry of each system was optimized prior to the calculation of mechanical properties using GULP v4.3 software package. 
Molecular simulations show that, in general, mechanical properties (Young modulus as an indication of elasticity, Shear modulus as an indication of hardness) for all systems improve with decrease in nanocluster size. This suggests that mechanical activation of fillers in PVDF-metal oxide nanoparticle composites should have a positive effect on the mechanical properties of composite systems. 
This suggests mechanical activation as an easy an inexpensive method of improving mechanical properties of polymer-nanocrystal composite materials.
T1  - Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites
ER  - 
@conference{
author = "Živojinović, Jelena and Peleš, Adriana and Blagojević, Vladimir A. and Kosanović, Darko and Pavlović, Vladimir B.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/861",
abstract = "Mechanical activation leads to the creation of new surfaces and decrease in particle size of the initial powder particles, which affects the crystallization of PVDF matrix.  In addition, prolonged mechanical activation leads to agglomeration of nanoparticles agglomerates of different sizes. 
Microstructural changes due to mechanical activation in ZnO, BaTiO3, SrTiO3 and TiO2 powders were investigated using electron microscopy (TEM and SEM), x-ray diffraction (XRD) and particle size analysis (PSA). These were correlated with molecular simulations of mechanical properties of PVDF-nanocluster composites with different oxide nanocluster sizes (1, 1.5 and 2 nm) 
Each system was simulated using a periodic system of metal oxide nanocrystal inside β-PVDF matrix. β-PVDF was chosen for its superior properties over α- and γ- phases. Geometry of each system was optimized prior to the calculation of mechanical properties using GULP v4.3 software package. 
Molecular simulations show that, in general, mechanical properties (Young modulus as an indication of elasticity, Shear modulus as an indication of hardness) for all systems improve with decrease in nanocluster size. This suggests that mechanical activation of fillers in PVDF-metal oxide nanoparticle composites should have a positive effect on the mechanical properties of composite systems. 
This suggests mechanical activation as an easy an inexpensive method of improving mechanical properties of polymer-nanocrystal composite materials.",
title = "Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites"
}
Živojinović J, Peleš A, Blagojević VA, Kosanović D, Pavlović VB. Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites. 2016;
Živojinović, J., Peleš, A., Blagojević, V. A., Kosanović, D.,& Pavlović, V. B. (2016). Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites.
null, null. 
Živojinović Jelena, Peleš Adriana, Blagojević Vladimir A., Kosanović Darko, Pavlović Vladimir B., "Influence of mechanical activation on mechanical properties of PVDF-nanoparticle composites" null (2016)

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