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Issue 6, 2012
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Mechanical, thermal and swelling properties of poly(acrylic acid)graphene oxide composite hydrogels

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Abstract

Graphene oxide (GO) is added into poly(acrylic acid) (PAA) hydrogels to modify their mechanical and thermal properties. The original PAA hydrogels, which are commonly crosslinked by N,N-methylenebisacrylamide (BIS), generally exhibit pronounced weakness and brittleness. When GO was added into the BIS-gel, the GO–BIS-gels become very tough and exhibited fairly good strength. The mechanical and thermal properties of GO–BIS-gels vary greatly by changing GO or BIS content. As for the swelling behaviors of the hydrogels, they are found to be still sensitive to pH. However, the BIS-gels have a higher equilibrium swelling ratio and swell faster than that of corresponding GO–BIS-gels. In addition, the deswelling ratio decreases with the increase of GO content. The cross-linking of GO with PAA is the main factor for these phenomenon. Thus, the content of GO and BIS can be adjusted for preparing hydrogels with different properties for a wide range of applications.

Graphical abstract: Mechanical, thermal and swelling properties of poly(acrylic acid)–graphene oxide composite hydrogels

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Publication details

The article was received on 15 Oct 2011, accepted on 17 Nov 2011 and first published on 22 Dec 2011


Article type: Paper
DOI: 10.1039/C1SM06970E
Citation: Soft Matter, 2012,8, 1831-1836
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    Mechanical, thermal and swelling properties of poly(acrylic acid)graphene oxide composite hydrogels

    J. Shen, B. Yan, T. Li, Y. Long, N. Li and M. Ye, Soft Matter, 2012, 8, 1831
    DOI: 10.1039/C1SM06970E

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