Skip to main content
SpringerLink
Log in

Synthesis of silica aerogels from waterglass via new modified ambient drying

  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

A new modified ambient drying process for synthesizing silica aerogels cost-effectively from waterglass has been developed. Crack-free silica aerogels were obtained via solvent exchange/surface modification of wet gels using IPA/TMCS/n-Hexane solution. Silica aerogels were heated at different temperatures. The effects of heating temperature on chemical bonding state of aerogels were investigated by means of DTA and FTIR. The surface characteristic of the aerogel was hydrophobic when heat-treated under 350°C. The porosities, densities, and specific surface areas of the silica aerogels were in the range of 93–94%, 0.12–0.15 g/cm3, and ∼630 m2/g, respectively. Distinct spring back phenomena were observed in surface modified wet gels during drying.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. L. W. HURBESH and J. F. POCO, J. Non-Cryst. Solids 188 (1995) 46.

    Google Scholar 

  2. S. S. PRAKASH, C. J. BRINKER and A. J. HURD, ibid. 190 (1995) 264.

    Google Scholar 

  3. F. SCHWERFEGER, D. FRANK and M. SCHMIDT, ibid. 225 (1998) 24.

    Google Scholar 

  4. H. S. YANG, S. Y. CHOI, S. H. HYUN, H. H. PARK and J. K. HONG, ibid. 221 (1997) 151.

    Google Scholar 

  5. Y. G. KWON and S. Y. CHOI, J. Mater. Sci. 35 (2000) 6075.

    Google Scholar 

  6. D. M. SMITH, G. W. SCHERER and J. M. ANDERSON, J. Non-Cryst. Solids 188 (1995) 191.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Ceramic Engineering, College of Engineering, Yonsei University, Seoul, 120-749, Korea

    C. J. Lee, G. S. Kim & S. H. Hyun

Authors
  1. C. J. Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. S. Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. S. H. Hyun
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to S. H. Hyun.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lee, C.J., Kim, G.S. & Hyun, S.H. Synthesis of silica aerogels from waterglass via new modified ambient drying. Journal of Materials Science 37, 2237–2241 (2002). https://doi.org/10.1023/A:1015309014546

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1015309014546

Keywords

Search

Navigation