Hybrid Magnetic Hydrogels Used as Artificial Marine Animals for Noncontact Cleaning

文献类型： 外文期刊

第一作者： Cao, Qiang

作者： Cao, Qiang;Liu, Na;Xiao, Yushi;Wu, Lidong;Huang, Rong;Li, Yang

作者机构：

关键词： magnetic hydrogel; double-network hydrogel; soft robotic marine animal; noncontact cleaning; alginate; polyacrylamide

期刊名称：ACS APPLIED POLYMER MATERIALS （ 影响因子：4.089； 五年影响因子：4.089 ）

ISSN： 2637-6105

年卷期： 2021 年 3 卷 2 期

页码：

收录情况： SCI

摘要： Here, we developed a one-step method to prepare a highly tough and magnetic (1.2 emu g(-1)) polyacrylamide-Fe3O4-alginate (PAAM-Fe3O4-ALG) double-network hydrogel. Magnetic Fe3O4 nanoparticles (MNPs) were intercalated into the double network, producing Fe3O4-intercalated hydrogels with ferromagnetism. These kinds of magnetic hydrogels are endowed with good mechanical properties, such as high tensile strength (90 kPa) and superior compressive strength (0.9 MPa). Although such gels contain 20 mg mL(-1) magnetic nanoparticles, they could still be stretched more than eight times their original length. The noncontact soft robot, which is a magnetically driven hydrogel, was demonstrated. Two typical soft robots (a scallop and a starfish) were prepared with magnetic hydrogels. Under external magnetic stimulation, these soft robotic marine animals could clean a fish tank without the help of a hand in the water. This approach will extend the application of hydrogels in various fields, such as controlled drug delivery, underwater cleaning robots, and other integrated hydrogel devices.

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