Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Ultrasonic Synthesis of Silica Powder Using Emulsion Method

에멀젼법을 이용한 실리카 분말의 초음파 합성

  • Lee, S.G. (School of Materials Science and Engineering, Pusan National University) ;
  • Kim, H.S. (School of Materials Science and Engineering, Pusan National University) ;
  • Kang, B.S. (ERC/NSDM, Pusan National University) ;
  • Seo, G.S. (JPS Microtech, Pukyong National University) ;
  • Park, S.S. (Division of Applied Chemical Engineering, Pukyong National University) ;
  • Park, H.C. (School of Materials Science and Engineering, Pusan National University)
  • Published : 2006.06.27
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Abstract

Fine silica powders were synthesized via w/o emulsion method using sodium silicate, ammonium sulfate, Triton N-57, and cyclohexane as silica source, precipitating agent, surfactant, and oil phase, respectively. The powders were prepared under a conventional process and an ultrasonic process using the same reactants at room temperature for 1 hr varying the concentration of $Na_2SiO_3$ solution and the mol ratio of $H_2O$/surfactant, respectively. The particle size of the silica powder was reduced with decreasing the concentration of sodium silicate solution and with increasing the mol ratio of $H_2O$/surfactant under with and without ultrasounds. The size of powder with ultrasounds was smaller than that without ultrasounds, which indicates that the application of ultrasound in the synthesis of silica powder is an efficient way to reduce particle size.

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