Mechanically Strong and Highly Tough Prolamin Protein Hydrogels Designed from Double-Cross-Linked Assembled Networks,ACS Applied Polymer Materials

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Mechanically Strong and Highly Tough Prolamin Protein Hydrogels Designed from Double-Cross-Linked Assembled Networks
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2019-05-14 , DOI: 10.1021/acsapm.9b00066
Jing Jing Wang _{1,

2,

3} , Yixiang Wang _{1,

4} , Qiyang Wang ₁ , Jingqi Yang ₁ , Song-Qing Hu ₂ , Lingyun Chen ₁

Affiliation

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.

中文翻译：

从双交联组装网络设计的机械强度高和强韧的醇溶蛋白蛋白质水凝胶。

这项研究介绍了具有优异机械性能的独特构建的双交联大麦醇溶蛋白/玉米醇溶蛋白水凝胶。值得注意的是，经过优化的水凝胶在70％的应变下表现出1.90 MPa的压应力，经过40次加载/卸载处理后具有出色的自恢复性，并具有出色的可折叠性能。对水凝胶纳米结构和性质的进一步研究表明，大麦醇溶蛋白高度参与了化学交联网络的形成，从而保持了水凝胶的弹性。而由大麦醇溶蛋白/玉米醇溶蛋白组装而成的由珠状颗粒（直径约80 nm）组成的物理交联域则均匀地整合在大型化学交联框架内，并充当“负载载体”以有效地吸收能量。所以，交织在一起的空间网络结构和珠状粒子共同有效地分散和吸收能量，以承受化学和物理交联网络中的大变形。这种基于醇溶蛋白的水凝胶有潜力用于生物基承重的软质装置中，这将使玉米醇溶蛋白和大麦醇溶蛋白作为玉米和大麦的副产品得到多样化利用。此外，所产生的知识可能为从许多其他植物蛋白资源设计和构建强力水凝胶提供新的机会，以释放其作为生物聚合物和生物相容性材料的潜力。这种基于醇溶蛋白的水凝胶有潜力用于生物基承重的软质装置中，这将使玉米醇溶蛋白和大麦醇溶蛋白作为玉米和大麦的副产品得到多样化利用。此外，所产生的知识可能为从许多其他植物蛋白资源设计和构建强力水凝胶提供新的机会，以释放其作为生物聚合物和生物相容性材料的潜力。这种基于醇溶蛋白的水凝胶有潜力用于生物基承重的软质装置中，这将使玉米醇溶蛋白和大麦醇溶蛋白作为玉米和大麦的副产品得到多样化利用。此外，所产生的知识可能为从许多其他植物蛋白资源设计和构建强力水凝胶提供新的机会，以释放其作为生物聚合物和生物相容性材料的潜力。

更新日期：2019-05-23

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