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Aerogel Processing

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Handbook of Sol-Gel Science and Technology

Abstract

One of the problems largely commented in the sol–gel science is how to make large bodies, because gels tend to crack during drying. The drying stresses are attributed to capillary phenomena and differential strain which result from a pressure gradient in the pore liquid. By the supercritical drying (SCD), the capillary stresses are eliminated and monolithic aerogel can be obtained. This chapter focuses on silica aerogel, the most studied aerogel. It presents an overview of the supercritical drying techniques, but also some of the remarkable aerogel properties (optical, mechanical, thermal and acoustical, etc.) with respect to its peculiar microstructure.

The chapter briefly presents other kinds of aerogels (oxides and chalcogenide aerogels, composite aerogels, organic aerogels, etc.) and a panel of potential applications.

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Authors and Affiliations

  1. IMBE, CNRS, IRD, Aix Marseille Université, Avignon Université, Bâtiment 12, 2 place Viala, 7263, 13397, Marseille, France

    Thierry Woignier

  2. IRD - Campus Agro Environnemental Caraïbes, B.P. 214 Petit Morne, 97232, Le Lamentin, Martinique, France

    Thierry Woignier

  3. Laboratoire Charles Coulomb, Université Montpellier 2, Place E. Bataillon, 34095, Montpellier Cedex 5, France

    Jean Phalippou, Florence Despetis & Sylvie Calas-Etienne

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  1. Thierry Woignier
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  2. Jean Phalippou
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  3. Florence Despetis
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  4. Sylvie Calas-Etienne
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Correspondence to Thierry Woignier .

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  1. Rutgers University, Piscataway, New Jersey, USA

    Lisa Klein

  2. Madrid, Spain

    Mario Aparicio

  3. City University of New York, New York, USA

    Andrei Jitianu

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Woignier, T., Phalippou, J., Despetis, F., Calas-Etienne, S. (2016). Aerogel Processing. In: Klein, L., Aparicio, M., Jitianu, A. (eds) Handbook of Sol-Gel Science and Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-19454-7_27-1

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