Scallop-inspired of multi-bond network protein adhesive with excellent bonding strength, mildew resistance and flame retardancy

IF 5.6 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2024-11-12 DOI:10.1016/j.indcrop.2024.120006

Chao Ma , Jie Wei , Bowen An , Yilei Han , Pusen Cao , Shifeng Zhang , Yuxia Chen , Yong Guo

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引用次数: 0

Abstract

Designing sustainable natural biomass adhesives with high bonding performance (particularly cold-pressing bonding strength) while maintaining excellent coating, mildew resistance, and flame-retardant properties is important for developing formaldehyde-free wood adhesives. Inspired by the wet adhesion system of scallops, we developed a novel bionic soybean meal (SM) adhesive with excellent bonding strength. In this adhesive system, keratin (KT) acts as a source of disulfide bonds (S–S) contributing formation/exchange donor, while Fe³⁺ ions formed dynamic coordination bonds with carboxyl groups and tannic acid, resulting in strong adhesion. The multiple crosslinking network system synergistically enhanced the adhesion, resulting in a cold-pressing bonding strength of 582.4 kPa, which is an improvement of 171.3 %. The dry and wet bonding strength was 3.19 MPa and 1.34 MPa, which was increased to 73.4 % and 97.1 % compared to the SM adhesive, respectively. Additionally, the adhesive exhibited desirable mildew resistance (under storage for 15 days) and superior flame resistance, which was attributed to the synergistic inhibition by the metal cations and phenolic hydroxyl groups. The design of this bionic system offers a novel approach for developing environmentally friendly wood adhesives.

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扇贝灵感来源于多键网络蛋白质粘合剂，具有出色的粘合强度、防霉性和阻燃性

设计具有高粘合性能（尤其是冷压粘合强度）的可持续天然生物质粘合剂，同时保持优异的涂层、防霉和阻燃性能，对于开发无甲醛木材粘合剂非常重要。受扇贝湿粘合系统的启发，我们开发出了一种具有出色粘合强度的新型仿生豆粕（SM）粘合剂。在这种粘合剂体系中，角蛋白（KT）是二硫键（S-S）的形成源/交换供体，而 Fe3+ 离子则与羧基和单宁酸形成动态配位键，从而产生强大的粘合力。多重交联网络系统协同增强了粘合力，使冷压粘合强度达到 582.4 kPa，提高了 171.3%。干湿粘合强度分别为 3.19 兆帕和 1.34 兆帕，与 SM 粘合剂相比分别提高了 73.4% 和 97.1%。此外，该粘合剂还表现出理想的防霉性（存放 15 天）和优异的阻燃性，这归功于金属阳离子和酚羟基的协同抑制作用。这种仿生系统的设计为开发环保型木材粘合剂提供了一种新方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.