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Requirements of organic gels for a successful ambient pressure drying preparation of carbon aerogels

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Abstract

In this paper, we investigated the requirements of organic gels for a successful ambient pressure drying by analyzing the role of the strength, the pore size and the surfactant of organic gels in decreasing the drying shrinkage of organic aerogels. Experimental results showed the effect of the decrease of the surface tension, resulting from the surfactant, on the drying shrinkage was very small and negligible. The drying shrinkage depended strongly on the strength and the pore size. Subsequently, the respective role of the strength and the pore size was evaluated. It can be found that the strength plays a greater role than the pore size.

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Acknowledgments

This research was supported by the Project of NNSFC(50472029), the Foundation of SRFDP, and the Team Project and Scientific Foundation of Guangdong (20003038, 2004A30404001).

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Authors and Affiliations

  1. Materials Science Institute, PCFM laboratory, Zhongshan (Sun Yat-Sen) University, Guangzhou, 510275, P. R. China

    Dingcai Wu & Ruowen Fu

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  1. Dingcai Wu
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  2. Ruowen Fu
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Correspondence to Ruowen Fu.

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Wu, D., Fu, R. Requirements of organic gels for a successful ambient pressure drying preparation of carbon aerogels. J Porous Mater 15, 29–34 (2008). https://doi.org/10.1007/s10934-006-9048-4

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  • DOI: https://doi.org/10.1007/s10934-006-9048-4

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