Bioinspired phenol-amine chemistry for developing bioadhesives based on biomineralized cellulose nanocrystals

编号 020037804

推送时间 20230116

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Bioinspired phenol-amine chemistry for developing bioadhesives based on biomineralized cellulose nanocrystals

来源期刊 Carbohydrate Polymers

期 第378期

发表时间 20221115

关键词 Biomineralized cellulose nanocrystals;  Phenol-amine chemistry;  Bio-adhesive;  Mineral-organic network;  Antibacterial properties; 

摘要 Inspired by the phenol-amine chemistry and biomineralization of insect cuticles, we developed a green and facile strategy for preparing a bio-adhesive with excellent adhesion properties, mildew resistance, and antibacterial activity. This biomimetic strategy incorporates functional catechol-modified e-polylysine and vanillin via grafting and Schiff base reactions. The biomineralized cellulose nanocrystals were prepared using a cellulose nanocrystal bio-template by regulating the in-situ biomineralization of inorganic nanoparticles, thereby building an optimized organic-inorganic mineralization framework in the polymer. The bonding strength of composite adhesive was significantly improved by multiple cross-linking networks through sacrificial hydrogen bonds, electrostatic interactions, and dynamic covalent bonds. The adhesion strength of the composite adhesive reached 1.13 MPa, which was 151% higher than the pristine adhesive. As a result of the synergistic effect of the catechol component, cationic e-polylysine, and aldehyde group, the bio-adhesive also exhibited favorable anti-mildew and anti-bacterial properties.

服务人员 尚玮姣

服务院士 宋湛谦

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