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Studies on alpha to beta Phase Transformations in Mechanically Deformed PVDF Films

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Title Studies on alpha to beta Phase Transformations in Mechanically Deformed PVDF Films
 
Creator VIJAYAKUMAR, RP
KHAKHAR, DV
MISRA, A
 
Subject poly(vinylidene fluoride)
polyvinylidene fluoride
crystalline phase
temperature
pvdf
uniaxial deformation
waxd
ftir
sals
 
Description PVDF cast films were drawn at different temperatures to different draw ratios at constant draw rate to understand the mechanism of alpha to beta phase transformation during mechanical deformation. WAXD and FTIR studies were carried out to determine the formation and content of beta phase in the drawn films. Lower stretch temperatures gave higher fractions of beta phase. The cast PVDF films were also drawn at suitable temperatures below the PVDF ambient melting point to the draw ratio of 6.4. The highest fraction of beta phase obtained in these ultra drawn films was 0.98. SALS studies carried out for films at different stretch ratios show the change in spherulitic structure with the stretching parameters and give information for the understanding of phase transformation during stretching of PVDF films. (C) 2010 . J Appl Polym Sci 117: 3491-3497, 2010
 
Publisher JOHN WILEY & SONS INC
 
Date 2011-08-16T15:01:54Z
2011-12-26T12:55:00Z
2011-12-27T05:43:29Z
2011-08-16T15:01:54Z
2011-12-26T12:55:00Z
2011-12-27T05:43:29Z
2010
 
Type Article
 
Identifier JOURNAL OF APPLIED POLYMER SCIENCE, 117(6), 3491-3497
0021-8995
http://dx.doi.org/10.1002/app.32218
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9535
http://hdl.handle.net/10054/9535
 
Language en