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2018-Macromol Mater Eng: Nanoclay Reinforced Self-crosslinking Poly(N-hydroxyethyl acrylate) Hydrogels with Integrated High Performances
来源:陈强研究员、PI个人网站 发布日期:2018-06-18
作者:Xianqiang Yu#, Yu Li#, Jia Yang*, Feng Chen, Ziqing Tang, Lin Zhu, Gang Qin, Yahui Dai, Qiang Chen*
关键字:nanocomposite hydrogels
论文来源:期刊
具体来源:Macromolecular Materials and Engineering
发表时间:2018年

Despite recent significant progress in fabricating tough hydrogels, it is still a challenge to realize high strength, large stretchability, high toughness, rapid recoverability and good self-healing simultaneous in a single hydrogel. Herein, Laponite reinforced self-crosslinking poly(N-hydroxyethyl acrylamide) (PHEAA) hydrogels (i.e. PHEAA/Laponite NC gels) with dual physically cross-linked network structures, where PHEAA chains can be self-crosslinked by themselves and also cross-linked by Laponite nanoplatelets, demonstrate integrated high performances. At optimal condition, PHEAA/Laponite NC gels exhibit high tensile strength of 1.31 MPa, ultrahigh tensile strain of 52.23 mm/mm, high toughness of 2238 J/m2, rapid self-recoverability (toughness recovery of 79% and stiffness recovery of 74% at room temperature for 2 min recovery without any external stimuli) and good self-healing property (strain healing efficiency of 42%). The work provides a promising and simple strategy for the fabrication of dual physically cross-linked NC gels with integrated high performances, and helps to expand the fundamentals and applications of NC

gels.

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