Non-isothermal crystallisation kinetics of self-assembled polyvinylalcohol/silica nano-composite

Peng, Zheng, Kong, Lingxue and Li, Si Dong 2005, Non-isothermal crystallisation kinetics of self-assembled polyvinylalcohol/silica nano-composite, Polymer, vol. 46, no. 6, pp. 1949-1955.

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Title Non-isothermal crystallisation kinetics of self-assembled polyvinylalcohol/silica nano-composite
Author(s) Peng, Zheng
Kong, Lingxue
Li, Si Dong
Journal name Polymer
Volume number 46
Issue number 6
Start page 1949
End page 1955
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2005-02-24
ISSN 0032-3861
1873-2291
Keyword(s) polyvinylalcohol
nano-composite
nonisothermal crystallisation
Summary A novel polyvinylalcohol/silica (PVA/SiO2) nano-composite is prepared with the self-assembly monolayer (SAM) technique. The SiO2 nano-particles are homogenously distributed throughout the PVA matrixes as nano-clusters with an average diameter ranged from 15 to 240 nm depending on the SiO2 contents. Using differential scanning calorimetry (DSC), the non-isothermal crystallisation behaviour and kinetics of the PVA/SiO2 nano-composites are investigated and compared to those of the pure PVA. There are strong dependences of the degree of crystallinity (Xc), peak crystallisation temperature (Tp), half time of crystallisation (t1/2), and Ozawa exponent (m) on the SiO2 content and cooling rate. The crystallisation activation energy (E) calculated with the Kissinger model is markedly lower when a small amount of SiO2 is added, then gradually increases and finally becomes higher than that of the pure PVA when there is more than 10% SiO2 in the composite.
Language eng
Field of Research 091202 Composite and Hybrid Materials
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2004, Elsevier Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30006636

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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