Novel photocrosslinkable and biodegradable polyester from bio-renewable resource

作者：Dong, Weifu; Ren, Jingjiao; Lin, Ling; Shi, Dongjian; Ni, Zhongbin; Chen, Mingqing^*

来源：Polymer Degradation and Stability, 2012, 97(4): 578-583.

DOI：10.1016/j.polymdegradstab.2012.01.008

• Biodegradable polyester
• Photocrosslinkable
• Polycondensation
• Bio-renewable

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 H-1 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.

• 出版日期2012-4
• 单位江南大学