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Issue 3, 2011
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Robust bonding and one-step facile synthesis of tough hydrogels with desirable shape by virtue of the double network structure

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Abstract

Robust bonding of a hydrogel in aqueous environment, either to another hydrogel or to a solid, is one of the major unsolved issues for the practical applications of hydrogels in various fields. Here we report robust bonding between a pair of hydrogel sheets, containing over 90 wt% of water, by applying the double-network (DN) structure. In the optimal condition, the peeling energy of the united gel sheets reaches 1200 J m−2, which is comparable to the bulk fracture energy of a normal type of tough DN gels. This hydrogel bonding technique is also applied to form tough bonding between hydrogel and plastic plates. Furthermore, based on this technique, we have developed a facile method to synthesize robust double network hydrogels with any desirable free-shape from micro-gel precursors. These novel techniques will substantially merit the applications of the tough hydrogels in various fields, such as an artificial meniscus.

Graphical abstract: Robust bonding and one-step facile synthesis of tough hydrogels with desirable shape by virtue of the double network structure

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Article information


Submitted
27 Aug 2010
Accepted
22 Oct 2010
First published
09 Nov 2010

Polym. Chem., 2011,2, 575-580
Article type
Paper

Robust bonding and one-step facile synthesis of tough hydrogels with desirable shape by virtue of the double network structure

J. Saito, H. Furukawa, T. Kurokawa, R. Kuwabara, S. Kuroda, J. Hu, Y. Tanaka, J. P. Gong, N. Kitamura and K. Yasuda, Polym. Chem., 2011, 2, 575 DOI: 10.1039/C0PY00272K

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