Abstract
Poly(ester-co-amides), PBSe random copolymers, were prepared by polycondensation of sebacic acid and 1,4-butanediol, introducing 1,4-butanediamine as comonomer. The homopolymer was semi-crystalline with T m of 65 °C. When the amide content was over 10%, two melting endotherms were observed and their melting enthalpies decreased significantly. WAXD results also showed a decrease of crystallinity with increasing amide content. Poly(ester-co-amides) had intramolecular and intermolecular hydrogen bonding, which was conformed by FT-IR. The degradability of the PBSe series increased with the amide content. Quantitative FT-IR analysis shows that the areas of the amide-amide hydrogen bonded NH band increased but the areas of amide-ester hydrogen bonded NH band decreased during hydrolysis.
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