Fully Biobased Copolyesters with High Gas Barrier and Enhanced Mechanical Properties Derived from 2,5-Thiophenedicarboxylic Acid and Long-Chain Dicarboxylic Acid

被引：0

作者：

Zuo, Jiyang ^{[1
,2
]}

Yang, Tao ^{[2
]}

Lin, Chen ^{[1
]}

Deng, Hongxia ^{[1
]}

Gu, Shanshan ^{[1
]}

Liu, Fei ^{[2
]}

Shen, Zhisen ^{[1
]}

Zhu, Jin ^{[2
]}

Wang, Jinggang ^{[2
]}

机构：

[1] Ningbo Univ, Affiliated Lihuili Hosp, Dept Otorhinolaryngol Head & Neck Surg, Ningbo 315100, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Biobased Polymer Mat Technol & Applicat Zh, Ningbo 315201, Zhejiang, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2025年 / 13卷 / 04期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

fully biobased; polyethylene-like; nonoxygenheteroatom; efficient toughening; green packaging; POLY(BUTYLENE 2,5-THIOPHENEDICARBOXYLATE); POLYESTERS; SEMICRYSTALLINE; CRYSTALLIZATION; POLYETHYLENE;

D O I：

10.1021/acssuschemeng.4c09431

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work provides an in-depth molecular structure design strategy for developing high-barrier polymer packaging films. A series of high-performance PPDThF copolyesters were prepared by utilizing the unique crystallization ability of poly(propylene 2,5-thiophenedicarboxylate) (PPThF), as well as a long-chain dicarboxylic acid, namely dodecanedioic acid (DA). The incorporation of a polyethylene-like polyester structure from DA into the main chain of polymers has been found to be random copolymerization, leading to limited crystallizable sequence lengths. The effects of the long-chain dicarboxylic acids on the thermal transition, aggregation structure, gas barrier properties, and optical properties of the copolyester PPDThF copolyesters were investigated. The results demonstrate that PPDThF-10 combines the benefits of conventional thermoplastics, like high strength (>30 MPa) and high modulus (>0.6 GPa), with the mechanical and physical characteristics of chemically cross-linked rubber, including high extensibility (epsilon = 730%) and toughness (134 MJ/m(-3)). The results obtained so far demonstrate that thiophene-based copolyesters can be used in food packaging applications.

引用

页码：1775 / 1787

页数：13