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Effect of High-Energy-Electron Irradiation on Nonisothermal Crystallization Kinetics in P(VDF-TrFE) 65/35 mol% Copolymers

Published online by Cambridge University Press:  01 February 2011

Zhi-Min Li  and
Z.-Y. Cheng
Zhi-Min Li
Affiliation:
lizhimi@auburn.edu
Z.-Y. Cheng
Affiliation:
chengzh@eng.auburn.edu, Auburn University, Materials Reserach and Education Center, United States
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Abstract

The effect of the high-energy-electron irradiation on the crystallization process in poly(vinylidene fluoride-trifluoroethyelene) [(P(VDF-TrFE)] 65/35 mol% copolymers was studied by nonisothermal crystallization using the differential scanning calorimetry (DSC) technique. The experimental data are analyzed using modified Avrami, Ozawa, and combined Avrami-Ozawa methods. It is found that the crystals grow in three dimensions in the irradiated samples. It is found that the irradiation results in a lower crystallization temperature and a lower crystallization activation energy. It is also found that the irradiated samples have a lower crystallization temperature than the unirradiated samples. All these results indicate that the crystals grown in the irradiated samples have a smaller surface energy, which corresponds to a thicker interfacial layer.

Keywords

crystal growthnucleation & growthdifferential thermal analysis (DTA)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 889: Symposium W – Electroresponsive Polymers and Their Applications , 2005 , 0889-W01-04
Copyright
Copyright © Materials Research Society 2006

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