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- Title
Preparation and characterization of copolymerized methylsilsesquioxane-benzylsilsesquioxane microparticles for electrophoretic sol-gel deposition.
- Authors
Matsuda, A.; Tanaka, T.; Tadanaga, K.; Minami, T.; Tatsumisago, M.
- Abstract
Copolymerized methylsilsesquioxane-benzylsilsesquioxane, (100 - x)MeSiO3/2·xBnSiO3/2 (mol%), microparticles of 0.3–0.4 μm in average diameter have been prepared by the sol-gel method and applied to the formation of thick films on indium tin oxide (ITO)-coated glass substrates by the electrophoretic deposition. The microparticles obtained were considered to be hybrid containing both methyl and benzyl groups from thermal analyses and structural investigations. The microparticles became fusible at x ≧ 80 by a heat treatment. Thick film, ca. 5 μm thick, consisting of electrophoretically deposited pure BnO3/2 microparticles became transparent upon thermal sintering of the particles during heat treatment at temperatures higher than 100°C. On the other hand, the increase in optical transmittance during the heat treatment of the films consisting of 20MeSiO3/2·80BnSiO3/2 microparticles was as small as about 20% in visible range even after the heat treatment. The smaller increase in transmittance is probably due to the relatively high viscosity of the 20MeSiO3/2·80BnSiO3/2 upon sintering in comparison with pure BnO3/2 for elimination of the voids in the films.
- Subjects
COPOLYMERS; PARTICLES; THICK films; INDIUM compounds; ELECTROPHORESIS
- Publication
Journal of Materials Science, 2004, Vol 39, Issue 3, p903
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1023/B:JMSC.0000012920.25128.1a