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

Title
Nonisothermal crystallization behaviors of nanocomposites of poly (vinylidene fluoride) and multiwalled carbon nanotubes
Authors
임전영김지헌김세현곽순종이영철서용석
Keywords
poly(vinylidene fluoride); PVDF; carbon nanotube; nanocomposite; crystallization; polymorph
Issue Date
2015-04
Publisher
Polymer
Citation
VOL 62, NO 7, 11-18
Abstract
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 α-phase. Without an external stimulus, development of β-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.
URI
http://pubs.kist.re.kr/handle/201004/49439
ISSN
00323861
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KIST Publication > Article
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