• Sol-emulsion-gel synthesis of ceramic particles

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    • Keywords


      Sol-gel; emulsion; ceramic particles

    • Abstract


      The basic characteristics of the sol-emulsion-gel (SEG) process are described as derived from water-in-oil type emulsions when ‘water’ is replaced by an aqueous sol and ‘oil’ indicates water-immiscible organic liquids. The main roles of a surfactant in emulsion formation are discussed. Steps in the generation of ceramic particles from the SEG process through a variety of experimental options are explained. Relevant examples are described where control of surfactant contents (below and above the working range of critical micelle concentration) in a sol-emulsion can lead to oxide particles of different sizes and shapes. Attempts are made to correlate the products of high-surfactant emulsions with micelles and mesophase structures known to form by surfactant molecules in large concentrations.

    • Author Affiliations


      D Ganguli1

      1. Sol-Gel Division, Central Glass and Ceramic Research Institute, Calcutta - 700 032, India
    • Dates

  • Bulletin of Materials Science | News

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