抄録
Polydiphenoxyphosphazene was synthesised by nucleophilic substitution of chlorine atoms in polydichlorophosphazene by the phenyl groups in the reaction with sodium phenolate as the most of the poly(diorganoxyphosphazene)s. It was found full substitution of chlorine atoms in synthesised polymer. Poly(diorganophosphazene)s, synthesised in substitution reaction involving chlorine atom replacement in polydichlorophosphazene by a suitable group, have desirable properties (e.g. flexibility at law temperatures, fastness to oils, biodegradability). Poly(diorganophosphazene)s in defined temperature regions have liquid crystalline structures, characterised by two-dimensional hexagonal arrangement of the chain centres in an equatorial plane which is perpendicular to the chain axis
. For the high molecular mass fractions of ploydiphenoxyphosphazene the X-ray analysis of crystal structure were carried out. The examination confirmed the crystalline structure of the synthesised polymer.
The increase of the intensity of X-ray reflections with increase of temperature was observed. This dependence and a number of X-ray reflections let determine the dimensions of the unit cell of the crystalline polymer.
