耐水解生物降解聚酯PBAT的制备及性能研究  

Preparation and characterizations of hydrolysis-resistant biodegradable PBAT

作　　者：徐梓迅 苑静 杜夕彦 张馨鹏 徐军[1] 郭宝华[1] XU Zixun;YUAN Jing;DU Xiyan;ZHANG Xinpeng;XU Jun;GUO Baohua(Department of Chemical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学化学工程系,北京100084

出　　处：《中国塑料》2025年第3期1-6,共6页China Plastics

基　　金：国家重点研发计划(2021YFD1700700)。

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%。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 ℃ 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.

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 

分 类 号：TQ321[化学工程—合成树脂塑料工业]