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Non-covalent Tough Hydrogels for Functional Actuators

Published online by Cambridge University Press:  10 December 2015

Jun Fu ,
Guorong Gao  and
Yuanna Sun
Jun Fu*
Affiliation:
Polymers and Composites Division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo 315201, China
Guorong Gao
Affiliation:
Polymers and Composites Division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo 315201, China
Yuanna Sun
Affiliation:
Polymers and Composites Division, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo 315201, China
*
*(Email: [email protected])
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Abstract

Tough and responsive hydrogels have recently attracted great research interestsfor potential applications in artifical muscles, soft robotics, and actuators,etc. This paper overviews our recent progresses in the design and synthesis ofhydrogels with very high strength and toughness, and actuators based on thesehydrogels. Inorganic nanospheres, nanorods, and nanosheets are exploited asmulti-functional crosslinkers to adsorb or bond with hydrophilic chains, leadingto hydrogels with very high strength, toughness, fatigue resistance, and/orself-healing. Introduction of functional groups including ionic monomers andamino groups results in hydrogels reponsive to pH, ionic strength and electricfield. Besides, ionoprinting has been used to change local crosslink densitybased on reversible chelating/decomposition of metal ions with functionalgroups. This process is rapid and thus enables reversible and rapid actuation ofhydrogel devices. Our studies will further aim to develop sophiscated devices byassembling hydrogel actuators.

Keywords

actuatortoughnessstrength
Type
Articles
Information
MRS Advances , Volume 1 , Issue 8: Biomaterials and Soft Materials , 2016 , pp. 501 - 507
Copyright
Copyright © Materials Research Society 2015 

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