DataVXAdvanced MaterialsPaper
journal article·2021-04

A Spider‐Silk‐Inspired Wet Adhesive with Supercold Tolerance

Xi Liu, Lianxin Shi, Xizi Wan, Bing Dai, Man Yang, Zhen Gu, Xinghua Shi, Lei Jiang, Shutao Wang

Advanced Materials· Volume 33· Issue 14
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Source abstract

Abstract

Abstract Conventional adhesives often encounter interfacial failure in humid conditions due to small droplets of water condensed on surface, but spider silks can capture prey in such environment. Here a robust spider‐silk‐inspired wet adhesive (SA) composed of core–sheath nanostructured fibers with hygroscopic adhesive nanosheath (poly(vinylpyrrolidone)) and supporting nanocore (polyurethane) is reported. The wet adhesion of the SA is achieved by a unique dissolving–wetting–adhering process of core–sheath nanostructured fibers, revealed by in situ observations at macro‐ and microscales. Further, the SA maintains reliable adhesion on wet and cold substrates from 4 to −196 °C and even tolerates splashing, violent shaking, and weight loading in liquid nitrogen (−196 °C), showing promising applicability in cryogenic environments. This study will provide an innovative route to design functional wet adhesives.
Source: crossref · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Surface Modification and Superhydrophobicity · Silk-based biomaterials and applications · Adhesion, Friction, and Surface Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

CAS Key Laboratory of Bio‐inspired Materials and Interfacial Science CAS Center for Excellence in Nanoscience Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China

University of Chinese Academy of Sciences Beijing 100049 P. R. China

Department of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing 100083 P. R. China

Laboratory of Theoretical and Computational Nanoscience Key Laboratory for Nanosystem and Hierarchy Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Chinese Academy of Sciences Beijing 100190 P. R. China

Funding

National Natural Science Foundation of China

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