Bioinspired Multifunctional Anti-icing Hydrogel

被引：226

作者：

He, Zhiyuan ^{[1
,2
]}

Wu, Chenyang ^{[2
]}

Hua, Mutian ^{[1
]}

Wu, Shuwang ^{[1
,3
]}

Wu, Dong ^{[1
]}

Zhu, Xinyuan ^{[3
]}

Wang, Jianjun ^{[2
]}

He, Ximin ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[2] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China

[3] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, State Key Lab Met Matrix Composites, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

来源：

MATTER | 2020年 / 2卷 / 03期

基金：

中国国家自然科学基金;

关键词：

HETEROGENEOUS ICE NUCLEATION; ANTI-ICE; SURFACES; WATER; PROPAGATION; COATINGS; DYNAMICS; LAYER;

D O I：

10.1016/j.matt.2019.12.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ice formation processes on solid surfaces are complex and diverse, which makes it a daunting challenge to design an icephobic material that is functional under different icing conditions in a complex varying real-life environment. Here, inspired by anti-freeze proteins, a multifunctional anti-icing platform based on polydimethylsiloxane (PDMS)-grafted polyelectrolyte hydrogel is reported, which can simultaneously inhibit ice nucleation, prevent ice growth, and reduce ice adhesion. The properties of interfacial water can be controlled by tuning the synergy of hydrophobicity and ion specificity, in contrast with the conventional wholly hydrophobic bulk systems (e.g., PDMS). This provides us a promising route to integrate various icephobic advantages into one material. The controllability of interfacial water grants the polyelectrolyte hydrogel coating high performance in inhibiting ice nucleation (ice nucleation temperature lower than -30 degrees C), preventing ice propagation (ice propagation rate lower than 0.002 cm(2)/s), and reducing ice adhesion (ice adhesion strength lower than 20 kPa).

引用

页码：723 / 734

页数：12

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