Authors: H. Kamiya, M. Suzuki, M. Kikuchi, M. Iijima and M. Tsukada
Affilation: Tokyo University of Agriculture and Technology, Japan
Pages: 728 - 731
Keywords: colloid probe, electric rewritable paper, multistage surface treatment
To control the dispersion stability of nanometer scaled fine inorganic particles in organic solvent, various kinds of surface modification on particles have been carried out. This paper focused on the surface modification on titanium oxide for the control of dispersion stability in isoparaffin for the application of electric rewritable paper by using microcapsule included nanoparticles. The surface of titanium oxide was modified by the multistage treatment of silane coupling agent and random graft polymerization and adsorption of polymer dispersant. Surface interaction between titanium oxide particles with various surface modifications and adsorption was determined by a colloidal probe atomic force microscope method (AFM). The relationship between direct measured surface interaction and dispersion stability and electric mobility of titanium oxide particle in isoparaffin solvent was discussed.