Crystallization kinetics of montmorillonite/poly(vinylidene fluoride) composites and its correlation with the crystalline polymer phase formation

被引：26
作者：
Lopes, A. C. [1 ]
Coelho Ferreira, J. C. [1 ]
Costa, C. M. [1 ]
Lanceros-Mendez, S. [1 ]
机构：
[1] Univ Minho, Ctr Dept Fis, P-4710057 Braga, Portugal
来源：
THERMOCHIMICA ACTA | 2013年 / 574卷
关键词：
Poly(vinylidene fluoride); Montmorillonite; Spherulite; Growth; Crystallization kinetics; POLY(VINYLIDENE FLUORIDE); MELTING BEHAVIOR; BETA-CRYSTALLINE; THIN-FILMS; NANOCOMPOSITES; POLYMORPHISM; MORPHOLOGY; BLENDS; MONTMORILLONITE; NUCLEATION;
D O I：
10.1016/j.tca.2013.08.003
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Isothermal crystallization of poly(vinylidene fluoride), PVDF, was studied in the presence of montmorillonite, MMT, fillers by polarization optical microscopy, POM. The spherulite growth was monitored as a function of time for different crystallization temperatures and the crystallization kinetics was evaluated with the help of the Avrami theory. The incorporation of MMT fillers is responsible for a reduction of the crystallization time of the polymer based on an increase of the nucleation and a reduction of the spherulite growth rate, the nucleation effect dominating therefore the overall crystallization kinetics. The slowing of the spherulitic growth rate by the presence of the clays due to the clay-polymer interactions is responsible for development of the gamma crystalline phase of PVDF in the composites. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：19 / 25
页数：7
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