Spontaneously Regenerative Tough Hydrogels
Spontaneously Regenerative Tough Hydrogels
复制标题
自发再生坚韧水凝胶
DOI：
10.1002/anie.201904932
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发表时间：
2019-07-01
影响因子：
16.6
通讯作者：
Kong, Tiantian
中科院分区：
文献类型：
--
作者：
Qu, Gang;Li, Yang;Kong, Tiantian
海绵动物Neofibularia nolitangere在被分解成小块后能够自发再生，且再生后的结构保持原有的外观和功能。具有此类能力的合成材料是人们非常期望得到的，但却很难实现。本文介绍了一种受海绵启发的、来自双网络（DN）坚韧水凝胶的自再生粉末。通过加水，水凝胶能从其粉末形式再生，并保持原有的外观和机械性能。粉末 - 水凝胶 - 粉末的循环可以多次重复，且机械性能损失很小，这类似于海绵的再生。这些DN水凝胶可以方便地储存，并且在再生时易于塑形。这项工作可能对涂层和胶粘剂用再生材料的开发具有重要意义。
Sponges, Neofibularia nolitangere, can regenerate spontaneously after being broken down into small pieces, and the regenerated structure maintains the original appearance and function. Synthetic materials with such capabilities are highly desired but hardly achieved. Presented here is a sponge-inspired self-regenerative powder from a double-network (DN) tough hydrogel. Hydrogels are regenerated from their powder form, by addition of water, with preservation of the original appearance and mechanical properties. The powder-hydrogel-powder cycle can be repeated multiple times with little loss in mechanical properties, analogous to the regeneration of sponges. These DN hydrogels can be conveniently stored and easily shaped upon regeneration. This work may have implications in the development of regenerative materials for coatings and adhesives.