Synthesis and properties of ferroelectric fluoroterpolymers with Curie transition at ambient temperature
作者： T. C. Chung , A. Petchsuk
DOI: 10.1021/MA020504C
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摘要: This paper discusses a new family of ferroelectric polymorphic fluoroterpolymers comprosed vinylidene difluoride (VDF), trifluoroethylene (TrFE), and chloro-containing third monomer, such as chlorodifluoroethylene (CDFE), chlorotrifluoroethylene (CTFE), which feature relatively narrow molecular weight composition distributions. The terpolymers were prepared by bulk reaction process with low temperature free radical initiator, i.e., the oxidation adducts trialkylborane oxygen. slightly bulky chlorine atom serves kink in polymer chain, spontaneously alters chain conformation crystalline structure. Compared to corresponding VDF/TrFE copolymer (>20 mol % TrFE), slowly increasing content ( 4) (β-phase) tttg+tttg- (γ-phase) without significant reduction overall crystallinity. Curie (ferroelectric−paraelectric) phase transition bet...
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