Journal of Liaoning Petrochemical University ›› 2024, Vol. 44 ›› Issue (5): 31-37.DOI: 10.12422/j.issn.1672-6952.2024.05.005

• Material Science and New Energy • Previous Articles     Next Articles

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

Wenxin JIANG(), Guangxiang ZHANG, Ke YANG, Guiyan ZHAO()   

  1. School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
  • Received:2023-05-16 Revised:2023-09-12 Published:2024-10-25 Online:2024-11-01
  • Contact: Guiyan ZHAO

全生物降解高抗冲PLA/PBAT复合材料的制备与性能

江闻欣(), 张广翔, 杨可, 赵桂艳()   

  1. 辽宁石油化工大学 石油化工学院,辽宁 抚顺 113001
  • 通讯作者: 赵桂艳
  • 作者简介:江闻欣(1998⁃),女,硕士研究生,从事生物降解高分子材料共混改性研究;E⁃mail:2675069385@qq.com
  • 基金资助:
    辽宁省教育厅科学技术研究项目(LJKMZ20220733)

Abstract:

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/m2, 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.

Key words: Poly (lactic acid), Poly (butyleneadipate-co-terephthalate), Compatibilizer, Toughening

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/m2,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。

关键词: 聚乳酸, 聚己二酸对苯二甲酸丁二醇酯, 相容剂, 增韧

CLC Number: 

Cite this article

Wenxin JIANG, Guangxiang ZHANG, Ke YANG, Guiyan ZHAO. Preparation and Properties of Fully Biodegradable High Impact PLA/PBAT Composites[J]. Journal of Liaoning Petrochemical University, 2024, 44(5): 31-37.

江闻欣, 张广翔, 杨可, 赵桂艳. 全生物降解高抗冲PLA/PBAT复合材料的制备与性能[J]. 辽宁石油化工大学学报, 2024, 44(5): 31-37.