Impact-Resistant Hydrogels by Harnessing 2D Hierarchical Structures

文献类型： 外文期刊

第一作者： Liang, Xiangyu

作者： Liang, Xiangyu;Chen, Guangda;Lei, Iek Man;Zhang, Pei;Chen, Xingmei;Zhang, Jiajun;Liu, Ji;Liang, Xiangyu;Liang, Xiangyu;Liang, Xiangyu;Wang, Zeyu;Wang, Zongbao;Lu, Mengze;Sun, Taolin;Lan, Yang;Liu, Ji;Liu, Ji

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关键词： 2D lamellar structures; ballistic resistance; crystalline materials; hydrogels; impact resistance

期刊名称：ADVANCED MATERIALS （ 影响因子：32.086； 五年影响因子：32.095 ）

ISSN： 0935-9648

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收录情况： SCI

摘要： With the strengthening capacity through harnessing multi-length-scale structural hierarchy, synthetic hydrogels hold tremendous promise as a low-cost and abundant material for applications demanding unprecedented mechanical robustness. However, integrating high impact resistance and high water content, yet superior softness, in a single hydrogel material still remains a grand challenge. Here, a simple, yet effective, strategy involving bidirectional freeze-casting and compression-annealing is reported, leading to a hierarchically structured hydrogel material. Rational engineering of the distinct 2D lamellar structures, well-defined nanocrystalline domains and robust interfacial interaction among the lamellae, synergistically contributes to a record-high ballistic energy absorption capability (i.e., 2.1 kJ m(-1)), without sacrificing their high water content (i.e., 85 wt%) and superior softness. Together with its low-cost and extraordinary energy dissipation capacity, the hydrogel materials present a durable alternative to conventional hydrogel materials for armor-like protection circumstances.

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[1]Advanced Materials. Liang, Xiangyu,Chen, Guangda,Lei, Iek Man,Zhang, Pei,Chen, Xingmei,Zhang, Jiajun,Liu, Ji,Liang, Xiangyu,Liang, Xiangyu,Wang, Zeyu,Wang, Zongbao,Lu, Mengze,Sun, Taolin,Lan, Yang,Liu, Ji,Liu, Ji. 2023

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