Abstract:

A new kind of bio-degradable aliphatic polyester was synthesized via melt polycondensation from butanediol, succinic acid, terephthalic acid, ethanediol, and L-lactic acid. This polyester displayed two yield points located at 10 % and 300 % of elongations, respectively. The yield at 300 % elongation imparted the polymer better strength, flexibility, shape-memory, and elasticity. This new polyester could be used as a toughener for brittle biodegradable materials, such as PLA.