全生物降解高抗冲PLA/PBAT复合材料的制备与性能  

Preparation and Properties of Fully Biodegradable High Impact PLA/PBAT Composites

作　　者：江闻欣 张广翔 杨可 赵桂艳 JIANG Wenxin;ZHANG Guangxiang;YANG Ke;ZHAO Guiyan(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2024年第5期31-37,共7页Journal of Liaoning Petrochemical University

基　　金：辽宁省教育厅科学技术研究项目(LJKMZ20220733)。

摘　　要：采用生物降解高分子材料聚己二酸/对苯二甲酸丁二醇酯(PBAT)增韧聚乳酸(PLA),制备了全生物降解高抗冲PLA/PBAT复合材料;为改善PBAT与PLA之间的界面相容性,采用熔融接枝的方法制备了PBAT接枝甲基丙烯酸缩水甘油酯(GMA)(PBAT-GMA)相容剂;研究了相容剂质量分数对PLA/PBAT复合材料性能的影响。结果表明,随着PBAT-GMA质量分数的增加,复合材料的冲击性能大幅提高;当PBAT-GMA质量分数为30%时,复合材料的冲击强度达到64.8 kJ/m^(2),断裂伸长率为289.9%;PBAT-GMA上的环氧基团与PLA的端基发生反应,可有效改善PLA与PBAT之间的界面相容性。Poly(butyleneadipate-co-terephthalate)(PBAT)was used to toughen poly(lactic acid)(PLA),and a fully biodegradable high impact PLA/PBAT composite was prepared.To improve the interface compatibility between PBAT and PLA,PBAT grafted glycidyl methacrylate(GMA)(PBAT-GMA)compatibilizer was prepared by the melt grafting method.The effect of the mass fraction of compatibilizer on the properties of PLA/PBAT composite was studied.The results show that with the increase of PBAT-GMA mass fraction,the impact strength of the composites is significantly improved.When the PBAT-GMA mass fraction is 30%,the impact strength of the composites reaches 64.8 kJ/m^(2),and the elongation at break is 289.9%;the compatibilizing mechanism is the epoxy groups on PBAT-GMA can react with the end groups of PLA,which effectively improves the interfacial compatibility between PLA and PBAT.

关 键 词：聚乳酸 聚己二酸对苯二甲酸丁二醇酯 相容剂 增韧 

分 类 号：O631[理学—高分子化学]