聚氯乙烯接枝聚乳酸的合成及生物降解性  

STUDIES ON SYNTHESIS AND BIODEGRADATION OF POLY(VINYL CHLORIDE) GRAFT POLY(LACTIC ACID)

作　　者：郑敦胜[1] 郭锡坤[1] 吴伟升[1] 

机构地区：[1]汕头大学化学系,广东汕头515063

出　　处：《高分子材料科学与工程》2006年第2期47-50,共4页Polymer Materials Science & Engineering

基　　金：汕头大学科学研究基金资助项目

摘　　要：以环己酮为溶剂,将聚氯乙烯(PVC)与聚乳酸(PLA)的钠盐进行反应,合成了以PVC为主链、PLA为支链的接枝聚合物(PVC-g-PLA)。讨论了实验条件对产物接枝率的影响,用核磁共振氢谱(1H-NM R)、红外光谱(FT-IR)和凝胶渗透色谱(GPC)对接枝聚合物进行了表征。采用土壤掩埋试验和扫描电镜(SEM)分析的方法,研究了接枝物的生物降解性。The biodegradable material of poly（lactic acid） side chains were prepared by the direct polymerization. The graft copolymer with poly （vinyl chloride） backbone and poly （lactic acid） side chain （PVC-g-PLA） was synthesized by the reaction between chlorine in PVC and sodium salts of PLA which were formed through the reaction of the hydroxyl group （-OH） in PLA with metal sodium in cyclohexanone. The influence of reaction temperature and time on the grafting degree of PVC-g-PLA was discussed, 1H-NMR, FT-IR and GPC were used to characterize the graft copolymer. The biodegradation of the copolymer was studied through outdoor soil burial and SEM analyses. The results show that the graft copolymer is degraded gradually under microorganism.

关 键 词：聚氯乙烯 聚乳酸 接枝 生物降解 

分 类 号：TQ316.343[化学工程—高聚物工业]