Synthesis and biodegradation of poly(2-pyrrolidone-co-¦Å-caprolactone)s

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• 作者：Atsuyoshi Nakayama ; Naoko Yamano ; Norioki Kawasaki ; Yasuhide Nakayama
• 关键词：Biodegradable ; Biobased ; Polyamide 4 ; Activated sludge ; Hydrolysis
• 刊名：Polymer Degradation and Stability
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：98
• 期：9
• 页码：1882-1888
• 全文大小：923 K

文摘

Copolyesteramides of 2-pyrrolidone with ¦Å-caprolactone were synthesized by ring-opening copolymerization. The copolymers were random-like and their melting temperature and heat of fusion were dependent on the polymer composition. Biodegradation by a polyamide 4 (PA4) degrading microorganism showed rapid degradation in the region of amide-rich polymer composition. On the contrary, enzymatic hydrolysis using a lipase resulted in a different tendency, that is, ester-rich copolymers hydrolyzed rapidly. Activated sludge makes copolymers degrade to CO₂ in wide polymer composition ratio. Copolyesteramides are expected to be applied as an environmentally-friendly plastics or bioabsorbable polymers in medical fields.