Synthesis of Poly(Alkyl/Arylphosphazenes) and Their Functionalized Derivatives

摘要

This program of research addressed several aspects of the chemistry andproperties of poly(alkyl/arylphosphazenes). The first of these was the development of improved polymerization methods for consistent preparation of high molecular weight samples of the basic poly(alkyl/arylphosphazenes) on a large scale. Secondly, the chemistry of the precursors was studied to better understand the mechanism of the polymerization, to prepare potential precursors to other main group element containing polymers, and to prepare block copolymers. A third part of this work involved the studies of the reactivity of the poly(alkyl/arylphosphazenes) and the synthesis of new poly(phosphazenes) from the preformed polymers. Finally, a variety of properties of the poly(alkyl/arylphosphazenes) were investigated, including thermal and surface properties, and gas permeability. The details of each of these areas of research are given in the following sections.