Preparation of desirable plant protein-based adhesive via bioinspired Laponite-assisted organic-inorganic copolymerization

The preparation of plant protein-based adhesives is one of the potential strategies to mitigate environmental pollution. In this work, the organic-inorganic copolymerization of calcium phosphate oligomer and soy protein was performed by adopting the concept of organic-inorganic polymerization and th...

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Bibliographic Details
Published in:Industrial crops and products 2023-10, Vol.202, p.116988, Article 116988
Main Authors: Luo, Jing, Zhou, Ying, Zhu, Feng, Zeng, Guodong, Li, Kuang, Li, Jiongjiong, Li, Xiaona, Gao, Qiang, Li, Jianzhang, Zhan, Xianxu
Format: Article
Language:English
Subjects:
Cytocompatibility
Flame retardancy
Mechanical strength
Organic-inorganic copolymerization
Soy protein adhesive
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Summary:The preparation of plant protein-based adhesives is one of the potential strategies to mitigate environmental pollution. In this work, the organic-inorganic copolymerization of calcium phosphate oligomer and soy protein was performed by adopting the concept of organic-inorganic polymerization and the physics of polymer adsorption to eliminate the interphase boundary, preparing an adhesive layer with continuous and uniform network structure without using chemical cross-linkers. The participation of ionic and hydrogen bonds improved the mechanical strength. In addition, the Laponite with anisotropic charge distribution was introduced into the cross-linking network to increase the density and cohesion of cross-linking and further improve the bonding performance without complex chemical synthesis. The modified adhesive had an optimum wet shear strength of 1.01 MPa, and excellent water resistance (85.7 % residue rate). The modified adhesive shows good cell compatibility plus flame retardancy. Overall, this biomimetic study has excellent promises for the design of protein-based adhesives with desirable properties for engineering applications. •A soy protein adhesive was formulated by adopting organic-inorganic polymerization concept.•Using physics of polymer adsorption to eliminate the interphase boundary.•The modified adhesive has a wet shear strength of 1.01 MPa, and excellent water resistance.•The modified adhesive shows good cell compatibility plus flame retardancy.
ISSN:0926-6690
1872-633X
DOI:10.1016/j.indcrop.2023.116988