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Ultra-strong, ultra-tough, and transparent polymer composite with excellent dynamic and biodegradable properties enabled by bicontinuous structure

文献类型： 外文期刊

作者： Chen, Jiaoyang 1 ; Jing, Jiajie 1 ; Wang, Cheng 2 ; Chen, Tao 1 ; Xu, Jianhua 1 ; Yao, Bowen 1 ; Fu, Jiajun 1 ;

作者机构： 1.Nanjing Univ Sci & Technol, Sch Chem & Chem Engn, Nanjing 210094, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Peoples R China

3.Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210094, Peoples R China

关键词： Polymer composites; Hydrogen bonds; Ultra-toughness; Reparability; Sustainability

期刊名称：POLYMER （ 影响因子：4.6； 五年影响因子：4.2 ）

ISSN： 0032-3861

年卷期： 2023 年 283 卷

页码：

收录情况： SCI

摘要： Developing plastics that can integrate mechanical (strength and toughness) and dynamic properties (recyclability, repairability, and biodegradability) is commonly challenging. In this work, inspired by the reinforced concrete structure, an ultra-strong and ultra-tough sustainable polymer composite was constructed through uniformly dispersing cellulose nanofiber in a poly(vinyl alcohol) matrix to form a bicontinuous interwoven network structure based on strong yet dynamic hydrogen bonding crosslink sites. The obtained composite showed an ultra-high toughness, a high tensile fracture strength, good Young's modulus and transparency, as well as excellent dynamic properties including good healing ability, recyclability, and biodegradability. Besides, with excellent gas barrier ability and good water vapor permeability, the composite showed great promise to replace traditional polymers for food packaging and preservation. At last, the mechanism behind the good performances is expected to inspire the design of other healable and green polymers in the future.

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