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Preparation of silica glass microspheres by sol-gel processing

Published online by Cambridge University Press:  31 January 2011

J.Y. Ding*
Affiliation:
Department of Ceramic Engineering and Graduate Center for Materials Research, University of Missouri–Rolla, Rolla, Missouri 65401
D.E. Day
Affiliation:
Department of Ceramic Engineering and Graduate Center for Materials Research, University of Missouri–Rolla, Rolla, Missouri 65401
*
a)Current address: Fiber Optic Materials Research Center, Rutgers University, Piscataway, New Jersey 08855–0909.
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Abstract

A method for making glass microspheres by the sol-gel process has been developed. Porous silica microspheres were produced at temperatures as low as 500 °C and densified silica microspheres were prepared at 800 °C. The size of the microspheres was controlled by adjusting the feed rate of the raw materials and the frequency of the droplet generator so that uniform spheres were obtained. Glass microspheres prepared by this method were characterized by Nuclear Magnetic Resonance (NMR), Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TGA), and optical microscopy.

Type
Articles
Copyright
Copyright © Materials Research Society 1991

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