Abstract
Lattice dynamical calculations were performed on poly(vinylidene fluoride) considered in the ideally perfect α and β structures or in a conformationally disordered structure. Head-to-head and GTG′ defects were considered. The conformational soliton proposed by Taylor has been also considered as a cooperative large defect and its spectrum has been calculated. From calculations indications were obtained for the idenfication of infrared or Raman bands originating from the “amorphous” part of the material. The problem of the existence of localized or cooperative conformational defects in this material is presented and information obtainable from the vibrational spectra are discussed.
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