Document Type : Regular Paper
Department of Chemistry, Integral University, Lucknow
Department of Physics, Integral University, Lucknow
Poly (vinyl alcohol) (PVA) is a medically active polymer. A systematic study of normal modes of vibration and their dispersions in syndiotactic PVA (sPVA) has been reported by using Urey-Bradley force field (UBFF) and Wilson’s GF matrix method as modified by Higgs. It provides detailed interpretation of IR and Raman spectra. Characteristic feature of dispersion curves such as regions of high density–of–states, repulsion and character mixing of dispersion modes are discussed. Predictive values of heat capacity as a function of temperature between 0-500 K have been evaluated.