Poly((aryloxy)carbophosphazenes): Synthesis, Properties, and Thermal Behavior

摘要

The cyclic carbophosphazene N3P2CCl5 undergoes thermal ring-openingpolymerization at 120 C to yield the poly(chlorocarbophosphazene) (N3P2CCl5)n as a hydrolytically sensitive elastomer. This polymer was allowed to react with a variety of aryloxide nucleophiles to afford a range of hydrolytically stable poly((aryloxy)carbophosphazenes). These macromolecules were characterized by 31P, 1H, and 13C NMR spectroscopy, IR spectroscopy, elemental analysis, differential scanning calorimetry, gel permeation chromatography and, in one case, light scattering. Analogous, small-molecule model reactions, in which the cyclocarbophosphazene was allowed to react with the same aryloxide nucleophiles to yield the cyclic species are also described. The glass transition temperatures of the poly((aryloxy)carbophosphazenes) are higher than those of their classical polyphosphazene analogues.