Water-dispersible macromolecular antioxidants for toughening and strengthening cellulose membranes

文献类型： 外文期刊

第一作者： Wang, Jie

作者： Wang, Jie;Gao, Wei;Jin, Yu;Tian, Wangmao;Zhang, Yutao;Hu, Chengcheng;Wang, Baoxia;Yuan, Liang;Dong, Shuqi

作者机构：

关键词： Cellulose films; Macromolecular antioxidants; Sustainable polymers; Phenolic polymers; Vanillin

期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：12.5； 五年影响因子：11.9 ）

ISSN： 0144-8617

年卷期： 2024 年 339 卷

页码：

收录情况： SCI

摘要： Biodegradable packaging materials from cellulose are eco-friendly alternatives to traditional petroleum-based plastics. Balancing its mechanical properties as well as protective values (antioxidation, oxygen barrier, etc.) is critical. However, most studies to improve its antioxidation performance were accompanied by sacrificed mechanical properties. In the current work, a series of linear -COOH functionalized phenolic polymers were prepared from phenolic compounds (vanillin, 3,4-dihydroxy benzaldehyde) through a facile tri-component thiolaldehyde polycondensation. While circumventing the cumbersome protection-deprotection of phenol groups, the one-pot strategy also affords water dispersible polymers for fabricating composites with cellulose nanofibers in an aqueous medium. After introducing 5-10 wt% of the copolymers, a minor soft phase was formed inside the composites, contributing to enhanced mechanical strength, toughness, antioxidation capability, and ultra-violet blocking performance, while its oxygen barrier property was well maintained.

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