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The influence of shaped TiO2 nanofillers on thermal properties of polyvinyl alcohol
PVA-based nanocomposites consisting of shaped TiO2 nanocrystals (nanoparticles, nanotubes or nanorods) were synthesized by direct blending of polymer and titania nanocrystals solution or powder. In order to elucidate the influence of shape of titania nanocrystals on thermal stability of polymer matr...
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Published in: | Journal of the Serbian Chemical Society 2012, Vol.77 (5), p.699-714 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | PVA-based nanocomposites consisting of shaped TiO2 nanocrystals
(nanoparticles, nanotubes or nanorods) were synthesized by direct blending of
polymer and titania nanocrystals solution or powder. In order to elucidate
the influence of shape of titania nanocrystals on thermal stability of
polymer matrix and particles interaction with PVA chain, structural and
thermal characterizations of PVA/TiO2 nanocomposites were performed. Faceted
nanoparticles increased the thermal stability of PVA matrix. Titania
nanotubes and nanorods did not show any stabilizing effect on polymer matrix
in argon atmosphere. The thermo-oxidative degradation temperature of PVA
increased with addition of faceted TiO2 nanoparticles. The thermo-oxidative
stability of the PVA matrix was affected more by the presence of titania
nanotubes and nanorods in comparison with its thermal stability in inert
atmosphere. The crystallinity degree (Xc=32 %) of PVA matrix slightly
decreased in the presence of faceted TiO2 nanoparticles in nanocomposite
sample.
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ISSN: | 0352-5139 1820-7421 |
DOI: | 10.2298/JSC110331161R |