Low-water-content polyelectrolyte hydrogels inspired by human epidermal stratum corneum

Shen，Zihang1; Ma，Jie1; Cai，Yijie1; Li，Siyang1; Ruan，Dongrui1; Dai，Shufen2; Sheng，Zhi1; Bai，Jiabao1; Yin，Daochen1; Ping，Jianfeng2; Ying，Yibin2; Yang，Canhui3; Qu，Shaoxing1; Jia，Zheng1

2023-12-20

10.1016/j.xcrp.2023.101741

Cell Reports Physical Science   影响因子和分区

2666-3864

Hydrogels typically contain large amounts of water (>80 wt %) and suffer from limitations inherent to high water content, including rapid dehydration under ambient conditions and limited mechanical properties. Herein, inspired by the low water content and stable performance of human epidermis, we report a low-water-content polyelectrolyte hydrogel (i.e., L-hydrogel) that mimics the composition of the human epidermal stratum corneum by employing an integrated hydrophobic/hydrophilic network design. The low water content of L-hydrogels (<12 wt %) leads to superior self-healing capability with a healing efficiency of ∼100%, strength and modulus approaching ∼1 MPa, skin-like fracture toughness (3,390 J/m), and strong natural adhesions (∼120–1,300 N/m) to both wet and dry surfaces. L-hydrogels also possess stable water content and mechanical properties over time under ambient conditions, enabling long-lasting stable functionality for various types of triboelectric nanogenerators and ionic skins. L-hydrogels hold promise for long-term practical applications in soft ionotronics under ambient conditions.

hydrogels mechanical properties self-healing soft ionotronics weather resistance

SCI

英语

其他

2-s2.0-85180595531

Scopus

1.State Key Laboratory of Fluid Power and Mechatronic Systems,Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,Center for X-Mechanics,Department of Engineering Mechanics,Zhejiang University,Hangzhou,310027,China
2.Laboratory of Agricultural Information Intelligent Sensing,School of Biosystems Engineering and Food Science,Zhejiang University,Hangzhou,310058,China
3.Shenzhen Key Laboratory of Soft Mechanics & Smart Manufacturing,Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Shen，Zihang,Ma，Jie,Cai，Yijie,et al. Low-water-content polyelectrolyte hydrogels inspired by human epidermal stratum corneum[J]. Cell Reports Physical Science,2023,4(12).

Shen，Zihang.,Ma，Jie.,Cai，Yijie.,Li，Siyang.,Ruan，Dongrui.,...&Jia，Zheng.(2023).Low-water-content polyelectrolyte hydrogels inspired by human epidermal stratum corneum.Cell Reports Physical Science,4(12).

Shen，Zihang,et al."Low-water-content polyelectrolyte hydrogels inspired by human epidermal stratum corneum".Cell Reports Physical Science 4.12(2023).