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Aliphatic Polyesters Synthesized by Solution Polycondensation Combined with Melt Polycondensation

Ying Kou

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Abstract

Three aliphatic polyesters poly(butylene succinate)(PBS),poly(butylene adipate)(PBA) and Poly(butylene sebacate)(PBSe) were synthesized by solution polycondensation combined with melt polycondensation.Chemical structures of the products were characterized by 1H NMR.Three aliphatic polyesters with the number average molecular weight was over 50,000,the initial thermal decomposition temperature was over 300 ℃ and the elongation at break was over 300 %,among them PBA was more than 400 %.The results showed that structural symmetry was main influence factors on melting point and biodegradability,but carbon chain length was main influence factors on thermal decomposition.

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What this paper is about

Three aliphatic polyesters poly(butylene succinate)(PBS),poly(butylene adipate)(PBA) and Poly(butylene sebacate)(PBSe) were synthesized by solution polycondensation combined with melt polycondensation.Chemical structures of the products were characterized by 1H NMR.Three aliphatic polyesters with the number average molecular weight was over 50,000,the initial thermal decomposition temperature was over 300 ℃ and the elongation at break was over 300 %,among them PBA was more than 400 %.The results showed that structural symmetry was main influence factors on melting point and biodegradability,but carbon chain length was main influence factors on thermal decomposition.

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Available abstract

Three aliphatic polyesters poly(butylene succinate)(PBS),poly(butylene adipate)(PBA) and Poly(butylene sebacate)(PBSe) were synthesized by solution polycondensation combined with melt polycondensation.Chemical structures of the products were characterized by 1H NMR.Three aliphatic polyesters with the number average molecular weight was over 50,000,the initial thermal decomposition temperature was over 300 ℃ and the elongation at break was over 300 %,among them PBA was more than 400 %.The results showed that structural symmetry was main influence factors on melting point and biodegradability,but carbon chain length was main influence factors on thermal decomposition.

Key concepts: Adipate, Polyester, Condensation polymer, Materials science, Thermal decomposition, Polymer chemistry, Melting point, Biodegradation

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