Abstract

Abstract Hollow microspheres composed of organic-inorganic hybrid wall (polyorganosiloxane) have been synthesized as a new material in a W/O emulsion system from organosilanes. The average diameter of spheres for a typical run is 1.8 μm (standard deviation = 0.84) with a large spherical cavity in them and thermally stable at least up to 400 °C in air. The polyorganosiloxane wall is amorphous and becomes porous by treating at around 400 °C in air.

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