Synthesis and Photoinitiated Crosslinking of Active Poly(lactic acid) Materials  

作　　者：ZHAO Xipo WU Tao PENG Shaoxian FANG Pengfei 赵西坡;WU Tao;彭少贤;方鹏飞(Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology;School of Physics and Technology, Wuhan University)

机构地区：[1]Hubei Provincial Key Laboratory of Green Materials for Light Industry,Collaborative Innovation Center of Green Light-weight Materials and Processing,School of Materials Science and Engineering,Hubei University of Technology,Wuhan 430068,China [2]School of Physics and Technology,Wuhan University,Wuhan 430072,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2018年第5期1239-1246,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(Nos.51273060,21174108);the Key Project of Hubei Provincial Department of Education;Open Fund of Hubei Provincial Key Laboratory of Green Materials for Light Industry

摘　　要：Acrylate-terminated poly（lactic acid）（DPLA） was synthesized by polycondensation, using lactic acid, polyalcohol and acrylic acid as the raw materials. The prepolymer products in each process were characterized by FT-IR, 1 H-NMR, GPC and DSC. DPLAs were then formulated with reactive diluent and diphenyl ketone as photoinitiator and photopolymerized into film（FPLA）. Thermal stability and degradation properties of the UV curing PLA film were studied. The results showed that the structures of prepolymer and the performances of the film could be adjusted by changing the types and content of the branching agent polyalcohol. After crosslinking modification, the degradation rate of FPLA was reduced and FPLA had better thermal stability than the pure PLA.Acrylate-terminated poly（lactic acid）（DPLA） was synthesized by polycondensation, using lactic acid, polyalcohol and acrylic acid as the raw materials. The prepolymer products in each process were characterized by FT-IR, 1 H-NMR, GPC and DSC. DPLAs were then formulated with reactive diluent and diphenyl ketone as photoinitiator and photopolymerized into film（FPLA）. Thermal stability and degradation properties of the UV curing PLA film were studied. The results showed that the structures of prepolymer and the performances of the film could be adjusted by changing the types and content of the branching agent polyalcohol. After crosslinking modification, the degradation rate of FPLA was reduced and FPLA had better thermal stability than the pure PLA.

关 键 词：photoactivity PLA UV curing BIODEGRADABLE 

分 类 号：TQ316[化学工程—高聚物工业]