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Titanium compounds as coatings on polystyrene latices and as hollow spheres
Authors:H. Shiho  N. Kawahashi
Affiliation:(1) JSR Corporation Fine Electronic Research Laboratories Specialty Materials Laboratory 100 Kawajiri-cho, Yokkaichi-city Mie 510-8552 Japan e-mail: hiroshi_shiho@jsr.co.jp Tel.: +81-593-458074 Fax: +81-593-458625, JP
Abstract:Sub-micron-sized anionic polystyrene latices have been coated with uniform layers of amorphous titanium dioxide by hydrolysis of titanium tetrabutoxide in ethanolic solutions containing the polymer cores. The thickness of the coating layer could be altered by adjusting the concentration of titanium tetrabutoxide and the amount of polymer latex added to the system. Hollow colloidal spheres of crystal titanium dioxide were obtained by calcination of the so-coated polystyrene latices at an elevated temperature. Received: 29 July 1999/Accepted in revised form: 15 October 1999
Keywords:Titanium dioxide  Composite particles  Hydrolysis  Polymer latex  Calcination
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