Fine Silica Powder Modified with Quaternary Ammonium Groups:5. The reactivity with trialkylamine and its characteristics

概要

論文の詳細を見る
Fine silica powders were modified with quaternary ammonium groups, and the products were characterized in various respects. 1, 3, 5, 7-Tetramethylcyclotetra siloxane was deposited on fine silica powder at 80°C by a chemical vapor deposition method, where it was catalytically polymerized to form a surface coating of poly (methylsiloxane). Fine silica powder modified with quaternary ammonium groups (XT m, m : carbon number of alkyl chain, 4-12) was synthesized from polymethylsiloxane-SiO<SUB>2</SUB> by hydrosilylation with ρ-chloromethylstyrene and subsequent treatment with trialkylamine. The contact angle of XTm showed a tendency to increase with increasing carbon number of the alkyl chain. Furthermore, in the case of the powder-oil dispersion system, the Bingham yield value increased with increasing the carbon number of the alkyl chain in the dispersed particles and the coagulation force between particles.
Japan Society of Colour Materialの論文