1982
DOI: 10.1021/ma00230a024
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Crystalline forms in a copolymer of vinylidene fluoride and trifluoroethylene (52/48 mol %)

Abstract: flections. In a fiber diagram from a sample having cylindrical symmetry, one could imagine this pattern being spun about the central spot.

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Cited by 212 publications
(97 citation statements)
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“…Lovinger et at. 4 and Horiuchi et at. 5 proposed a two-phase structure consisting of well-ordered and less-ordered pseudohexagonal phases.…”
mentioning
confidence: 91%
“…Lovinger et at. 4 and Horiuchi et at. 5 proposed a two-phase structure consisting of well-ordered and less-ordered pseudohexagonal phases.…”
mentioning
confidence: 91%
“…7 The copolymer P͑VDF-TrFE͒ has the simple linear structure-͑CH 2 -CF 2 ͒ x -͑CF 2 -CHF͒ 1−x -, where the monomers are understood to have a random sequence. 8,9 The ferroelectric ␤ phase of P͑VDF-TrFE͒ consists of all-trans chains, 2 which possess a net electric dipole moment perpendicular to the carbon backbone, directed from the electronegative fluorine toward the electropositive hydrogen. When P͑VDF-TrFE͒ is heated through the ferroelectric-paraelectric phase transition, the alltrans chains develop a disordered trans-gauche conformation packed in a centrosymmetric hexagonal structure and a ͑110͒ lattice spacing that is about 10% larger than that of the ␤ ferroelectric phase.…”
Section: Introductionmentioning
confidence: 99%
“…These chains crystallize in parallel rows with a rhombohedral ͑mm2͒ point group symmetry and aligned dipoles in the ferroelectric state. 7 Switching is accomplished by applying a large electric field to reverse the direction of polarization of all the chains.…”
mentioning
confidence: 99%