Affiliation:
1. State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Textile Science and Engineering Wuhan Textile University Wuhan 430200 China
2. State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Functional Polymer Materials Frontiers Science Center for New Organic Matter Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Nankai University Tianjin 300071 China
3. Department of Science China Pharmaceutical University Nanjing 211198 China
Abstract
AbstractHigh actuation performance of a moisture actuator highly depends on the presence of a large property difference between the two layers, which may cause interfacial delamination. Improving interfacial adhesion strength while increasing the difference between the layers is a challenge. In this study, a moisture‐driven tri‐layer actuator with a Yin–Yang‐interface (YYI) design is investigated in which a moisture‐responsive polyacrylamide (PAM) hydrogel layer (Yang) is combined with a moisture‐inert polyethylene terephthalate (PET) layer (Yin) using an interfacial poly(2‐ethylhexyl acrylate) (PEA) adhesion layer. Fast and large reversible bending, oscillation, and programmable morphing motions in response to moisture are realized. The response time, bending curvature, and response speed normalized by thickness are among the best compared with those of previously reported moisture‐driven actuators. The excellent actuation performance of the actuator has potential multifunctional applications in moisture‐controlled switches, mechanical grippers, and crawling and jumping motions. The Yin–Yang‐interface design proposed in this work provides a new design strategy for high‐performance intelligent materials and devices.
Funder
National Basic Research Program of China
National Natural Science Foundation of China
Nankai University
Fundamental Research Funds for the Central Universities
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
11 articles.
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