Structural and Piezoelectric Characterization of P (VDF-TrFE)/Ionic Liquid Gels

Poly(vinylidene fluoride-trifluoroethylene)(P(VDFTrFE)) gels were prepared by the permeating ionic l iquid [1-Ethyl-3-methylimidazolium bis(trifluoromethyl sulfonyl)imide] from the surface. The prepared P(VD F-TrFE)/IL gels were structurally and electrically inv estigated. The XRD patterns and FT-IR spectra impl ied that the most part of the P(VDF-TrFE) formed with the ferroelectric Form Ι crystal phase, however, a part of P(VDF-TrFE) showed the new composited structure with ILs in the P(VDF-TrFE) permeated gels. The polarization switching and piezoelectric res ponse of P(VDF-TrFE)/IL permeated gel films were measured. The piezoelectric constant d33 of P(VDF-Tr FE)/IL gel films increased.