Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20899
Title: Effect of electron irradiation on poly(vinylidene fluoride-trifluoroethylene) 56/44 mol% copolymers
Authors: Guo, SS
Zhao, XZ
Lu, SG
Lau, ST
Chan, HLW 
Issue Date: 2004
Publisher: Institute of Physics Publishing
Source: Journal of physics. D, Applied physics, 2004, v. 37, no. 3, p. 472-478 How to cite?
Journal: Journal of physics. D, Applied physics 
Abstract: High-energy electron-irradiated poly(vinylidene fluoride-trifluoroethylene) 56/44 mol% copolymers are studied in a broad dose ranging from 0 to 110 Mrad. The experimental results are obtained by differential scanning calorimetry (DSC), x-ray diffraction, dielectric constant, dc conductivity and polarization hysteresis loop based on structural changes and dielectric relaxation behaviour. All the x-ray and DSC results show that both the crystalline and polar ordering decreased after irradiation, indicating a partial recovery from trans-gauche bonds to local trans bonds (polar ordering). The dielectric relaxation peaks, obeying the Vogel-Fulcher Law, indicate that the copolymers have transformed from a normal ferroelectric to a relaxor ferroelectric. It is also found that dc conductivity can be modulated with electron irradiation, as well as the hysteresis loop characteristics.
URI: http://hdl.handle.net/10397/20899
ISSN: 0022-3727
EISSN: 1361-6463
DOI: 10.1088/0022-3727/37/3/027
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