中国塑料 ›› 2022, Vol. 36 ›› Issue (9): 105-110.DOI: 10.19491/j.issn.1001-9278.2022.09.015

• 塑料与环境 • 上一篇    下一篇

利用废弃PET酯交换法合成PBAT的研究

李梦璐1(), 苏婷婷1(), 王战勇2   

  1. 1.辽宁石油化工大学石油化工学院,辽宁 抚顺 113001
    2.沈阳农业大学生物科学与技术学院,沈阳 110866
  • 收稿日期:2022-05-19 出版日期:2022-09-26 发布日期:2022-09-26
  • 通讯作者: 苏婷婷(1978—),女,博士,副教授,主要从事塑料的生物降解研究,sutingting1978@126.com
    E-mail:nuyoah6446@163.com;sutingting1978@126.com
  • 作者简介:李梦璐(1997—),女,硕士,主要从事聚合物的生物降解研究,nuyoah6446@163.com
  • 基金资助:
    辽宁省兴辽英才计划项目(XLYC180734)

Synthesis of PBAT through transesterification with discarded PET

LI Menglu1(), SU Tingting1(), WANG Zhanyong2   

  1. 1.School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China
    2.College of Bioscience and Biotechnology,Shenyang Agricultural University,Shenyang 110866,China
  • Received:2022-05-19 Online:2022-09-26 Published:2022-09-26
  • Contact: SU Tingting E-mail:nuyoah6446@163.com;sutingting1978@126.com

摘要:

以废弃聚对苯二甲酸乙二醇酯(PET)矿泉水瓶为原料,采用酯交换法获得聚对苯二甲酸丁二醇酯(PBT)预聚体,再与聚己二酸丁二醇酯(PBA)共聚获得聚对苯二甲酸/己二酸丁二醇酯(PBAT)产物,通过核磁共振光谱仪、红外光谱仪、热重分析仪、差示扫描量热分析仪和万能试验机等对PBAT产物的结构和性能进行了分析表征。结果表明,PBAT产物的热稳定性良好,300 ℃以内不会热分解;PBAT产物的水接触角是78.54°,是一种亲水材料;PBAT产物的断裂伸长率达到900 %以上,具备进一步应用推广的可能性。

关键词: 废弃聚对苯二甲酸乙二醇酯, 聚对苯二甲酸/己二酸丁二醇酯, 酯交换法

Abstract:

Poly(ethylene terephthalate⁃co⁃butylene adipate) (PBAT) was prepared through transesterification using waste poly(ethylene terephthalate) (PET) as a raw material. The structure and compositions of the PBAT products were determined by nuclear magnetic resonance and infrared spectroscopy, and their thermal properties were investigated using TGA and DSC. The contact angle of PBAT was measured by a five⁃point method, and their tensile properties were measured using a universal test machine. The results indicated that there was no thermal decomposition occurring below 300 ºC for the PBAT products. This is an indication of good heat resistance. The PBAT developed in this work exhibited a contact angle of 78.54º, indicating a good hydrophilic nature. Moreover, the PBAT presented elongation at break of over 900 %, indicating a good application potential.

Key words: discarded poly(ethylene terephthalate), poly(terephthalic acid?co?adipic acid?co?butylene glycol), transesterification method

中图分类号: