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The preparation and characteristic of robust inorganic/organic IPN nanocomposite hydrogels with fast response rate

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Abstract

In order to prepare a robust thermosensitive hydrogels with ultrarapid response rate, the –Si–O– network was incorporated into the first clay cross-linked poly(N-isopropylacrylamide) network by the simultaneous hydrolytic polycondensation of tetramethoxysilane (TMOS); the two-step freezing polymerization technique was used in polymerization process for guaranteeing the very fast response rate of gels. The properties of resulting hydrogels (T-NC gels) including mechanical properties, hydrophily, swelling and response behavior show an obvious dependency on the content of added TMOS. With the increase of added TMOS, the more integrated and high-density –Si–O– network was formed in gels, which makes the gels become more robust with higher strength and modulus, while the swelling ratio and response rate decreases due to the lapped effect of increased network density and hydrophobicity. Interestingly, T-NC gels show better volume stability than that of NC gels in shrinking process.

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Acknowledgements

We acknowledge the financial supports of the National Natural Science Foundation (21104017, 61174100).

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Authors and Affiliations

  1. Key Laboratory of Advanced Materials Technology for Packaging, Hunan University of Technology, Zhuzhou, 412008, China

    Yi Chen & Guangsheng Zeng

  2. Institute of Polymer Research, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China

    Yi Chen & Weijian Xu

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  1. Yi Chen
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  2. Weijian Xu
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  3. Guangsheng Zeng
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Correspondence to Weijian Xu.

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Chen, Y., Xu, W. & Zeng, G. The preparation and characteristic of robust inorganic/organic IPN nanocomposite hydrogels with fast response rate. J Mater Sci 49, 7360–7370 (2014). https://doi.org/10.1007/s10853-014-8359-0

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  • DOI: https://doi.org/10.1007/s10853-014-8359-0

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