Abstract
Polyamides having 2-phenyl-4,5-imidazolediyl units in the main chain were prepared from 4,4′-2-phenyl-4,5-imidazole)dibenzoic acid and aromatic diamines. Polycondensation by a direct solution method gave high-molecular-weight polymers. The polymers are highly soluble in polar solvents and show high T g (> 290°C) and T d (> 440°C) values. Films were cast from dimethylacetamide or 1-methyl-2-pyrrolidone solutions. Mechanical properties, i.e. tensile strength, elongation at break and tensile modulus, were evaluated.
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