INFRARED AND RAMAN-SPECTRA OF THE PHOSPHAZENE HIGH POLYMER [NP(O2C12H8)](N)

The vibrational spectra of a new type of phosphazene polymer, [NP(O2C1 2H8)](n) (polyspirophosphazene), are discussed. The spectra were recor ded for powders dispersed in KBr pellets and for films prepared from d ifferent solvents. The IR spectra are dominated by the vibrational mod es of the main chain whereas the Raman spectra are dominated by the vi brations of the peripheral biphenyl groups. The full width at half max imum (FWHM) of the Raman band at 1609 cm(-1), corresponding to one of the CC stretching modes of the biphenyl, decreases with increase in th e degree of crystallinity of the polymer sample. (C) 1998 John Wiley & Sons, Ltd.