Nonisothermal crystallization behaviors of nanocomposites of poly(vinylidene fluoride) and multiwalled carbon nanotubes

被引：22
|
作者：
Lim, Jun Young [1 ,2 ]
Kim, Jihun [1 ,2 ]
Kim, Sehyun [3 ]
Kwak, Soonjong [4 ]
Lee, Youngchul [5 ]
Seo, Yongsok [1 ,2 ]
机构：
[1] Seoul Natl Univ, Dept Mat Sci & Engn, Coll Engn, RIAM, Seoul 151744, South Korea
[2] Seoul Natl Univ, Dept Mat Sci & Engn, Coll Engn, ITRC, Seoul 151744, South Korea
[3] LG Chem Ltd, Tech Ctr, Polymer Proc Technol Team, Taejon 305738, South Korea
[4] Korea Inst Sci & Technol, Polymer Hybrid Res Ctr, Seoul 136791, South Korea
[5] Korea Inst Ind Technol, Chungchung Reg Div, Cheonan 331822, Chungnam, South Korea
来源：
POLYMER | 2015年 / 62卷
关键词：
Nonsiothermal crystallization kinetics; PVDF/MWCNT nanocomposites; Polymorphs development; BETA-PHASE; PIEZOELECTRIC PROPERTIES; OXIDATION;
D O I：
10.1016/j.polymer.2015.02.012
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A kinetic equation for the nonisothermal crystallization was employed to analyze the crystallization behaviors of poly(vinylidene fluoride)/multiwalled carbon nanotube (PVDF/MWCNT) composites and its polymorph development. The Avramic exponent, n, could be reasonably well determined from the nonisothermal crystallization exotherm. The polarized optical microscopy showed that both neat PVDF and the nanocomposites had well-developed spherulite morphology. Most crystallization phase of the composite had only cc-phase. Without an external stimulus, development of beta-phase responsible for the piezoelectric properties of PVDF was not observed. Nonisothermal analysis implicitly provides the clue of morphological development history as well as PVDF molecular ordering around the foreign nuclei. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：11 / 18
页数：8
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