Diphenyldiacetylene and p-diethynylbenzene homopolymers and copolymers exhibit high resistance to heat and thermal oxidation.Their composites with commercial oligomers were examined.It is well known that substituted polyacetylenes exhibit a set of unique physicochemical properties allowing preparation on their basis of diverse materials for electronics,information recording,and catalysis1-3.Within the class of substituted polyacetylenes,polydiphenyldiacetylene(poly-DPD)and poly-p-di-ethynylbenzene(poly-DEB)exhibit high resistance to heat and thermal oxidative degradation1,4.Furthermore,there are indications that polyconjugated polymers inhibit thermal and thermal oxidative degradation of various substances and polymeric materials4,5.However,these studies dealt with samples of polyconjugated polymers that had been prepared under the conditions causing formation of defective structures of macrochains.The polymers were insoluble and contained virtually no reactive functional groups.Furthermore,the suggested procedures for preparing the polymers were difficult to implement in industry.
展开▼
