聚烯烃接枝甲基丙烯酸缩水甘油酯增强增韧聚乳酸研究  

Study on the strength and toughness of polylactic acid with POE-g-GMA

作　　者：赵麒 于柠瑶 宫鑫 ZHAO Qi;YU Ning-yao;GONG Xin(College of Chemistry,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学化学学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2024年第2期40-44,共5页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林省与中国科学院科技合作高新技术产业化专项项目(2023SYHZ0035)。

摘　　要：选用KT-20对聚乳酸(PLA)进行增韧改性,采用溶剂法制备PLA/POE-g-GMA复合膜,利用红外光谱和扫描电子显微镜对其进行结构和形貌表征,并通过熔融指数测试、差示量热性能测试和力学性能测试对其进行性能分析.结果表明,随着增韧剂的加入,PLA的结晶度降低,熔体强度提高,力学性能增强.通过溶剂法制备PLA/POE-g-GMA复合膜,解决了熔融共混制膜工艺中混合不均匀的问题,提高了复合膜的综合性能.Polylactic acid(PLA)was toughened by KT-20.The PLA/POE-g-GMA composite film was prepared by solvent method,and its performance was analyzed by FTIR,SEM,Melt Index and DSC.The results show that the performance of PLA increases by adding KT-20.The crystallinity of PLA decreases and the mechanical properties enhances with adding KT-20.The PLA/POE-g-GMA composite film prepared by solvent method can solve the problem of undermixing in the melt blending process and improve the comprehensive performance of the composite film.

关 键 词：聚乳酸 增韧剂 溶剂法 力学性能 

分 类 号：TB33[一般工业技术—材料科学与工程]