TITLE

Network structure in poly(vinylidene fluoride-trifluoroethylene) electrostrictive films

AUTHOR(S)
Buckley, G. S.; Roland, C. M.
PUB. DATE
January 2001
SOURCE
Applied Physics Letters;1/29/2001, Vol. 78 Issue 5, p622
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Recent studies of electron-irradiated copolymers of vinylidene fluoride and trifluoroethylene have demonstrated the potential for achieving a large electrostrictive response in these materials. Since the principal effect of the radiation is network formation, alternative methods of achieving improved electromechanical properties are available. In this letter, we use a two-solvent swelling technique to quantify the polymer-solvent interaction parameter for the copolymer networks. This enables determination of their crosslink densities, along with a measure of the degree of degradation accompanying radiolysis. Copolymer networks were then prepared chemically using organic peroxide. These networks were found to be similar to the radiation-crosslinked materials, both in the extent of degradation and with respect to the Curie temperature and crystalline melting behavior. The latter are crucial to the development of better electrostrictive properties. © 2001 American Institute of Physics.
ACCESSION #
4711284

 

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