论文部分内容阅读
TiO_2 nanoparticles were treated in a fluidized reactor by introducing Hexamethyld-isiloxane(HMDSO)plasma monomer.The organic HMDSO-polymer vapor was condensed on thenanoparticles and lowered their surface energy.This plasma treatment was harmless to the crystallattice of the TiO_2 nanoparticles.The treated nanoparticles were mixed in glycol solutions andpolymerized into TiO_2-polyester composites for studying the effect of plasma deposition on disper-sion.It was found that the dispersion of the TiO_2 nanoparticles in both glycol and the polyestermatrix was significantly improved due to lower surface energy and HMDSO plasma treatment,as from ultraviolet absorbency measurements and scanning electron microscopy observation.Thetheory of colloid stability successfully explained the dispersion enhancement of TiO_2 nanoparticlesin glycol.
TiO_2 nanoparticles were treated in a fluidized reactor by introducing Hexamethyld-isosiloxane (HMDSO) plasma monomer. Organic HMDSO-polymer vapor was condensed to then nanoparticles and lowered their surface energy. This plasma treatment was harmless to the crystal form of the TiO_2 nanoparticles. Treated nanoparticles were mixed in glycol solutions and polymerized into TiO_2-polyester composites for studying the effect of plasma deposition on disper-sion. It was found that the dispersion of the TiO_2 nanoparticles in both glycol and the polyester matrix was significantly improved due to lower surface energy and HMDSO plasma treatment, as from ultraviolet absorbency measurements and scanning electron microscopy observation. The theory of colloid stability successfully explained the dispersion enhancement of TiO 2 nanoparticlesin glycol.