An infrared study of phase-III poly(vinylidene fluoride)

Infrared spectra representative of crystalline regions of cast films of phase-III poly(vinylidene fluoride) (PVF2) have been obtained by absorbance subtraction techniques using a FT-IR instrument. The spectra contain more bands than previously reported and are not consistent with current models for the crystal structure. Several possible models and their relationship to the corresponding crystalline spectra of phase II and phase I are discussed.