中国塑料 ›› 2025, Vol. 39 ›› Issue (3): 1-6.DOI: 10.19491/j.issn.1001-9278.2025.03.001

• 材料与性能 •    

耐水解生物降解聚酯PBAT的制备及性能研究

徐梓迅, 苑静, 杜夕彦, 张馨鹏, 徐军, 郭宝华()   

  1. 清华大学化学工程系,北京 100084
  • 收稿日期:2024-11-22 出版日期:2025-03-26 发布日期:2025-03-24
  • 通讯作者: 郭宝华(1963—),男,教授,从事生物可降解聚酯合成与功能化,聚合物合金材料与纳米复合材料,医用组织工程材料等研究,bhguo@tsinghua.edu.cn
    E-mail:bhguo@tsinghua.edu.cn
  • 基金资助:
    国家重点研发计划(2021YFD1700700)

Preparation and characterizations of hydrolysis⁃resistant biodegradable PBAT

XU Zixun, YUAN Jing, DU Xiyan, ZHANG Xinpeng, XU Jun, GUO Baohua()   

  1. Department of Chemical Engineering,Tsinghua University,Beijing 100084,China
  • Received:2024-11-22 Online:2025-03-26 Published:2025-03-24
  • Contact: GUO Baohua E-mail:bhguo@tsinghua.edu.cn

摘要:

采用添加抗水解剂碳化二亚胺(CDI)和聚碳化二亚胺(PCDI),通过熔融共混法制备聚对苯二甲酸⁃己二酸丁二酯(PBAT)/PCDI和PBAT/CDI共混物,分析了不同抗水解剂含量对PBAT热性能、力学性能、分子量和水解行为的影响。结果表明,PCDI在提高PBAT耐水解性能方面表现优异,加入1.5 % PCDI的PBAT端羧基含量由未加入时的28.2 mol/t下降到0.4 mol/t;在70 ℃条件下水解1 051 h后,未添加抗水解剂的样品水解失重率达到7.54 %,加入PCDI质量分数为0.5 %、1.0 %、1.5 %的样品的水解失重率分别为6.71 %、4.34 %、0.55 %。

关键词: 聚对苯二甲酸?己二酸丁二酯, 聚碳化二亚胺, 抗水解剂, 水解

Abstract:

PBAT/polycarbodiimide (PCDI) and PBAT/carbodiimide (CDI) blends were prepared through melt blending using CDI and PCDI as anti⁃hydrolysis agents, and the effect of the content of anti⁃hydrolysis agent on the thermal, mechanical, molecular weight, and hydrolysis behavior of PBAT was investigated. The results indicated that PCDI exhibited a remarkable efficacy on enhancing the hydrolysis resistance of PBAT, resulting in a significant reduction in the content of carboxyl end groups from 28.2 to 0.4 mol/t when 1.5 wt% PCDI was incorporated. The PBAT samples without any anti⁃hydrolysis agents showed a hydrolysis weight loss of 7.54 wt% after hydrolysis at 70 ºC for 1 051 h. The hydrolysis weight losses of the samples containing 0.5, 1.0, and 1.5 wt% PCDI was 6.71 %, 4.34 % and 0.55 %, respectively.

Key words: poly (butylene adipate?co?terephthalate), polycarbodiimides, anti?hydrolysis agents, hydrolysis

中图分类号: