中国塑料 ›› 2023, Vol. 37 ›› Issue (8): 20-27.DOI: 10.19491/j.issn.1001-9278.2023.08.004

• 材料与性能 • 上一篇    下一篇

聚乙二醇二缩水甘油醚对PLA/PBAT共混材料相容性及性能的影响

赵萌萌, 杨红娟, 沈思宇, 冯硕, 张伟蒙, 胡晶()   

  1. 北京工商大学化学与材料工程学院,北京 100048
  • 收稿日期:2023-06-02 出版日期:2023-08-26 发布日期:2023-08-21
  • 通讯作者: 胡晶(1982—),女,副教授,从事生物降解材料及降解机理,高性能3D打印材料、聚合物、金属及其复合材料3D打印成型工艺及机制研究,hujing@th.btbu.edu.cn
    E-mail:hujing@th.btbu.edu.cn
  • 基金资助:
    国家重点研发计划(2022YFC2104600)

Effect of poly(ethylene glycol diglycidyl ether) on compatibility and properties of PLA/PBAT blends

ZHAO Mengmeng, YANG Hongjuan, SHEN Siyu, FENG Shuo, ZHANG Weimeng, HU Jing()   

  1. College of Chemistry and Materials Engineering,Beijing Technology and Business University,Beijing 100048,China
  • Received:2023-06-02 Online:2023-08-26 Published:2023-08-21
  • Contact: HU Jing E-mail:hujing@th.btbu.edu.cn

摘要:

以聚乙二醇二缩水甘油醚(PEGDGE)为相容剂与聚乳酸(PLA)和聚己二酸⁃对苯二甲酸丁二醇酯(PBAT)通过转矩流变仪进行熔融共混。通过傅里叶变换全反射红外光谱仪(ATR⁃FTIR)、扫描电子显微镜(SEM)、差示扫描量热仪(DSC)等探究了不同含量PEDGDE对PLA/PBAT共混体系断面微观形貌、热性能、力学强度等性能的影响。结果表明,与未加PEGDGE的PLA/PBAT的共混体系相比,加入3份PEGDGE时,材料的断裂伸长率可由14.6 %增加至38.9 %,是PLA/PBAT的2.7倍。加入PEGDGE后,PLA/PBAT共混体系冷结晶向低温移动,且加入5份PEGDGE时,结晶度有明显提升。

关键词: 聚乳酸, 聚己二酸?对苯二甲酸丁二醇酯, 聚乙二醇二缩水甘油醚, 增容剂

Abstract:

Poly(lactic acid) (PLA) and poly(adipic acid⁃butylene terephthalate) (PBAT) were melt blended by using a torque rheometer with poly(ethylene glycol diglycidyl ether) (PEGDGE) as a compatibilizer. The effect of PEDGDE content on the properties of PLA/PBAT blends such as cross⁃sectional microscopic morphology, thermal properties, and mechanical strength was investigated using Fourier⁃transform infrared spectroscopy, scanning electron microscopy, and differential scanning calorimetry, etc. The results indicated that compared to the blending system without a compatibilizer, the PLA/PBAT/PEDGDE blends achieved an increase in elongation at break from 14.6 % to 38.9 %. Such a result was 2.7 times higher than that of PLA/PBAT. Due to the presence of PEGDGE, the PLA/PBAT blending system showed a shift of cold crystallization peak towards a low temperature, and its crystallinity increased significantly when 5 parts of PEGDGE were added.

Key words: poly(lactic acid), poly(adipic acid?butylene glycol terephthalate), poly(ethylene glycol diglycidyl ether), compatibilizer

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