Crystallization Behavior of the Copoly(vinylidene fluoride-chlorotrifluoroethylene)

Abstract

Abstract: The crystallization behavior and crystals structures of copoly(vinylidene fluoride-chlorotrifluoroethylene), which was synthesized with n(NDE):n(CTFE)=1:4, were investigated by DSC, WAXD and FTIR, respectively. The experimental data show that the copolymer is one of the semicrystalline polymers. By means of DSC, the thermal analysis of the samples annealed at 313—353 K indicated that their melting temperature and crystallinity increased as the annealing time increased. During the annealing process, the crystals become perfect through segment reorganization. As a result, average lamellar thickness of copolymer annealed at 353 K was estimated about 4.68 nm according to the melting point of the sample. Average crystal dimension normal to(101) was calculated to be 5.86 nm and the interplanar crystal spacing along to(101) was measured to be 0.55 nm by using WAXD. Annealed at 333 K for 720 h, it was revealed that the maximum crystallinity of copolymer was about 14%.

Key words: Copoly(vinylidene fluoride-chlorotrifluoroethylene), Crystallizition, Structures

CLC Number:

O631.1

TrendMD:

FU Hai-Tao, CHEN Wei, YU Ying, FAN Zhong-Yong, NIE Fu-De, WANG Jian-Hua . Crystallization Behavior of the Copoly(vinylidene fluoride-chlorotrifluoroethylene)[J]. Chem. J. Chinese Universities, 2004, 25(10): 1958.

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Crystallization Behavior of the Copoly(vinylidene fluoride-chlorotrifluoroethylene)

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