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Licensed Unlicensed Requires Authentication Published by De Gruyter May 14, 2021

Design and Preparation of Magnetism-Driven Intelligent Hydrogel Actuators

Y.-J. Chang, Q. Zhou, W.-H. Hou, Y.-H. Liang, L. Ren, D.-H. Sun and L.-Q. Ren


Novel kinds of magnetism-driven poly N,N-dimethylacrylamide bilayer intelligent hydrogels with various nanofibrillated cellulose (NFC) contents were prepared successfully via one-step insitu free radical polymerization. The bilayer hydrogels possessed high mechanical strength, efficient swelling and steady magnetic response. With the increase of nanofibrillated cellulose content, the crosslinking density of the hydrogels increased, leading to the decrease of swelling rate and increase of mechanical strength and swelling bending degree of hydrogel actuators, respectively. Fe3O4 particles existed tightly on the micropore surfaces of the hydrogels, which built the function base of magnetic response of hydrogel actuators. The addition of Fe3O4 was irrelevant to the variation of crosslinking density. The bilayer structure exhibited high bonding strength. Based on intelligent responsive properties, bilayer hydrogels were designed as soft magnetism-driven actuators, realizing capture and transportation properties and provided material candidates for soft robots.

* Mail address: Yunhong Liang, State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, PRC


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The authors gratefully acknowledge the Cooperative Innovation Platform of National Oil Shale Exploration Development and Research, Project of National Key Research and Development Program of China (2018YFB1105100), the Foundation of State Key Laboratory of Automotive Simulation and Control (20171102), the National Natural Science Foundation (No 5167050531), Key Scientific and Technological Project of Jilin Province (20170204066GX) and China Postdoctoral Science Foundation (2019M661204).

Received: 2019-10-22
Accepted: 2020-10-01
Published Online: 2021-05-14
Published in Print: 2021-05-26

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