Abstract
AbstractPoly(enaminonitriles) containing flexible alkyl ether units were prepared by reacting p‐bis(1‐chloro‐2,2‐dicyanovinyl)benzene with various α,ω‐bis(4‐aminophenoxy)alkanes in N‐methyl‐2‐pyrrolidone (NMP). All the polymers are soluble in polar aprotic solvents such as N,N‐dimethylformamide (DMF), dimethyl sulfoxide (DMSO), N,N‐dimethylacetamide (DMAc) and NMP as well as in common organic solvents such as tetrahydrofuran and acetone. High molecular weight polymers possessing inherent viscosities in the range of 0.82–1.20 dL/g were obtained and tough films were cast from a DMF solution. They showed a large exotherm around 340°C attributable to the chemical changes of the dicyanovinyl group. Thermogravimetric analyses exhibited a good thermal stability with a 10% weight loss around 450°C and 73–88% residual weight at 500°C under nitrogen.
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