Synthesis of hollow microsphere containing of cavity

Composite Materials Center, Korea Institute of Ceramic Engineering & Technology, 233-5, Gasan-Dong,

Guemcheon-Gu, Seoul 153-801, South Korea

E-mail: venkatahrin@yahoo.com

Manuscript received 28 March 2007, revised I August 2007, accepted 6 November 2007

A novel procedure is reported for hollow silica microsphere containing cavity. Reaction with polystyrene, water, cetyltrimethylammonium chloride and tetraethylorthosilicate at room temperature give silica hollow microsphere containing cavity. Initially polystyrene synthesis was achieved by dispersion polymerization. Calcinations will eliminate the organics and leave microsphere as hollow. Scanning electron micrograph was used to identify the morphology.