Premium
Phase transformation mechanisms and piezoelectric properties of poly(vinylidene fluoride)/montmorillonite composite
Author(s) -
Zhang Y. Y.,
Jiang S. L.,
Yu Y.,
Xiong G.,
Zhang Q. F.,
Guang G. Z.
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34431
Subject(s) - montmorillonite , materials science , nucleation , composite number , phase (matter) , composite material , dielectric , piezoelectricity , fluoride , casting , chemistry , organic chemistry , inorganic chemistry , optoelectronics
Poly(vinylidene fluoride) (PVDF)/montmorillonite (MMT) composite with different MMT contents were prepared by solutions‐casting method. The effects of MMT on crystalline structure, morphology, dielectric property, piezoelectric property and phase transformation mechanism were studied. The results showed that acted as effective nucleation agents, the orientation of MMT were almost parallel to the surface of the film. The beta phase in the PVDF matrix was increased and the alpha phase was decreased. Relative dielectric constant and loss of the composite were increased with the increasing of MMT. The d 33 was also increased with MMT, which reached a maximum (5.8pC/N) with 2.0 wt % MMT. The mechanisms of changes in phase transformation and piezoelectric property were proposed based on experiment results. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012