自愈水凝胶
醇溶蛋白
醇溶蛋白
材料科学
化学工程
生物高聚物
纳米技术
贮藏蛋白
复合材料
化学
高分子化学
生物化学
聚合物
基因
工程类
作者
Jing Jing Wang,Yixiang Wang,Qiyang Wang,Jianguo Yang,Song-Qing Hu
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2019-05-07
卷期号:1 (6): 1272-1279
被引量:16
标识
DOI:10.1021/acsapm.9b00066
摘要
This study introduced uniquely constructed double-cross-linked hordein/zein protein hydrogels with outstanding mechanical properties. Notably, the optimized hydrogels demonstrated a compressive stress of 1.90 MPa at a strain of 70%, excellent self-recovery after 40 cycles of loading–unloading treatments, and superior foldable properties. Further study of the hydrogel nanostructures and properties has revealed that the hordein highly participated in the formation of chemically cross-linked networks which maintained the elasticity of the hydrogels; whereas physical cross-linked domains that consisted of beadlike particles (diameter ∼80 nm) by hordein/zein assembly were evenly integrated inside the large chemical cross-linked framework and acted as “load carriers” to effectually absorb energy. Consequently, the intertwined spatial network structures and beadlike particles collectively and efficiently dispersed and absorbed energy to withstand large deformations throughout the chemically and physically cross-linked networks. Such a prolamin protein-based hydrogel has potential to be used in biobased load-bearing soft devices, which will diversify the use of zein and hordein as the byproducts of maize and barley. In addition, the generated knowledge may offer new opportunities to design and construct strong hydrogels from many other plant protein resources to unlock their potential as biopolymer and biocompatible materials.
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