增塑剂对聚乳酸性能的影响  

Effect of Plasticizers on Property of Poly(lactic acid)

作　　者：钱欣[1] 沈兆宏[1] 潘柯良[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310014

出　　处：《塑料工业》2006年第12期63-65,共3页China Plastics Industry

摘　　要：对不同增塑聚乳酸体系的力学性能、脆韧转变现象和增塑剂的迁移性能进行了研究。实验表明：增塑剂品种不同对聚乳酸的增塑效果不同,三种增塑剂中柠檬酸三丁酯(TBC)的增塑效果最佳；TBC的质量分数小于10%时,增塑体系的脆性基本不变,TBC的质量分数在10%～13%时,材料出现脆韧转变；增塑聚乳酸体系增塑剂迁移率随增塑体系相容性的增加而减小,随增塑剂用量增加而增大。The mechanical property, brittle-tough transition and migration of plasticizers of plasticized poly- （lactic acid） composites were studied. The results indicated different plasticizers had different plasticizing effects on poly （lactic acid ）, among which the effect of tri-n-butyl citrate （TBC） was the best; the composite became tough when the mass percentage of TBC was about 10% - 13%; the migration of the plasticizers decreased with the increase of the compatibility of the plasticizers with poly （lactic acid）, and increased with the increase of the content of the plasticizer.

关 键 词：聚乳酸 增塑剂 脆韧转变 玻璃化温度 迁移 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]