Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8758
Title: Specific heat and thermal diffusivity of vinylidene fluoride/trifluoroethylene copolymers
Authors: Wong, YW
Hui, NM
Ong, EL
Chan, HLW 
Choy, CL 
Issue Date: 2003
Publisher: John Wiley & Sons
Source: Journal of applied polymer science, 2003, v. 89, no. 12, p. 3160-3166 How to cite?
Journal: Journal of applied polymer science 
Abstract: The specific heat (C) and thermal diffusivity (D) of vinylidene fluoride (VDF)/trifluoroethylene copolymers with 70 and 56 mol % of VDF were measured between 200 and 390 K, and the thermal conductivity (K) was calculated from these data. C, D, and K were rather insensitive to the VDF content but varied significantly with the crystallinity. At room temperature, as the crystallinity increased from about 55 to 85%, C decreased by 17%, and D and K increased by 60 and 40%, respectively. For the copolymer with 70 mol % VDP, C exhibited a broad peak, whereas D showed an abrupt drop at the ferroelectric-paraelectric transition near 370 K on heating. The transition temperature on cooling was about 40 K below that observed in the heating run, thus revealing a large thermal hysteresis. For the copolymer with 56 mol % VDF, the transition temperature was much lower, the transition region was narrower, and the thermal hysteresis was barely observable.
URI: http://hdl.handle.net/10397/8758
ISSN: 0021-8995
EISSN: 1097-4628
DOI: 10.1002/app.12551
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