Novel photocrosslinkable and biodegradable polyester from bio-renewable resource

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• 作者：Weifu Dong ; Jingjiao Ren ; Ling Lin ; Dongjian Shi ; Zhongbin Ni ; Mingqing Chen ; ^{mqchen@jiangnan.edu.cn}
• 关键词：Biodegradable polyester ; Photocrosslinkable ; Polycondensation ; Bio-renewable
• 刊名：Polymer Degradation and Stability
• 出版年：2012
• 期刊代码：85_01413910
• 类别：ms
• 出版时间：April, 2012
• 卷：97
• 期：4
• 页码：578-583
• 文件大小：1191 K

摘要

Novel photocrosslinkable and biodegradable polyester with was synthesized by polycondensation of 3,4-dihydroxycinnamic acid (DHCA) and 10-hydroxycapric acid (HDA) which were derived form lignin and castor oil respectively. The molecular structure of poly(DHCA-co-HDA) copolymers was characterized by FTIR and ¹H NMR measurement. The presence of HDA in the copolymers enhanced the flexibility of macromolecular chain, thus it lowed the glass transition temperature and accelerated the photoreactivity of polyester. Poly(DHCA-co-HDA) copolymers exhibited fairly good tensile properties. The elongation at break was enhanced with increasing the content of HDA. After UV photo-crosslinking, the tensile strength was further improved and elongation at break decreased. The hydrolysis experiments revealed that copolymers are facile biodegradable, and the hydrolysis rate of was accelerated after photo-crosslinking.