A dual-dynamic crosslinking network enabled strong, flexible, self-healing, and biodegradable chitosan fiber paper/vitrimer composites for plastic substitution

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers Pub Date : 2025-03-21 DOI:10.1016/j.carbpol.2025.123523

Xiaoqian Zhang , Leyi Lin , Haonan Zhou, Jie Zou, Wang Zhao, Guowen Zhou, Zepeng Lei, Xiaohui Wang

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引用次数: 0

Abstract

The development of high-performance biomass-based vitrimers has emerged as a crucial research topic to reduce reliance on petroleum-based plastics. Achieving both high strength and toughness is essential for most biomass-based vitrimers, yet these properties typically tend to be mutually exclusive. Here we show a multifunctional composite, CFP/TAV-PI, prepared by integrating an all-natural polyimine vitrimer (TAV-PI) into chitosan fiber paper (CFP) through in-situ polymerization and heat-pressing treatments. The CFP/TAV-PI films, featuring a dual-dynamic crosslinking network of hydrogen bonds and dynamic imine bonds, achieve a tensile strength of 57.93 MPa, elongation at break of 44.66 %, and toughness of 18.00 MJ m⁻³. Additionally, CFP/TAV-PI possess high transparency, self-healing ability, and thermal/chemical stability. Importantly, they are also readily degradable under both chemical and natural conditions. Our findings highlight a novel approach to prepare degradable composites with remarkable strength and flexibility, offering the potential to replace conventional plastic products.

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来源期刊

Carbohydrate Polymers 化学-高分子科学

CiteScore

22.40

自引率

8.00%

发文量

1286

审稿时长

47 days

期刊介绍： Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.