Structural changes of 80/20 poly(vinylidene fluoride–trifluoroethylene) copolymer induced by electron irradiation
Weiping LiShishang GuoYiwen TangXingzhong Zhao
Abstract
Abstract The electron irradiation effect on 80/20 poly(vinylidene fluoride–trifluoroethylene) [P(VDF–TrFE)] copolymers was studied by FTIR spectra and X‐ray diffraction. Infrared spectra showed decreasing intensity of bands at 1430, 1286, 846, and 505 cm −1 , the appearance and intensity increasing with irradiation doses of bands at 768, 601, and 1735 cm −1 , which revealed the conformational change after irradiation. The X‐ray diffraction patterns exhibited a decrease of volume fraction of ferroelectric phase and expansion of the lattice space. The electron‐irradiated P(VDF–TrFE) films showed structural changes and polar phase to nonpolar phase transformation. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 91: 2903–2907, 2004
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