title: Adsorbed behavior of spin-labeled silane coupling agent on colloidal silica studied by electron spin resonance.
abstract: The adsorption mechanism of silane coupling agent on the colloidal silica surface is studied with spin-labeled silane coupling agent using ESR method. The density of the adsorbed silane molecules was determined to be approximately 1.5-2 molecules per 100 A2 of the silica surface in 95% ethanol solution. In addition, ESR signal of spin-labeled agent adsorbed on the colloidal silica surface was composed of two components; slow component attributable to the agents adsorbed directly on the Si--OH groups of the silica surface through hydrogen bond formation and rapid one attributable to the agents interacted with such adsorbed silane molecules.
authors.affiliation: Department of Dental Materials, Nihon University School of Dentistry at Matsudo, Chiba, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Nishiyama
authors.forename: H
authors.initials: H
authors.lastname: Katsuki
authors.forename: K
authors.initials: K
authors.lastname: Horie
authors.forename: T
authors.initials: T
authors.lastname: Asakura
mesh_terms: D000180:Acrylic Resins; D000327:Adsorption; D003102:Colloids; D003188:Composite Resins; D004578:Electron Spin Resonance Spectroscopy; D012821:Silanes; D012825:Silicon; D012822:Silicon Dioxide; D013113:Spin Labels; D013997:Time Factors
chemical_list: D000180:Acrylic Resins; D003102:Colloids; D003188:Composite Resins; D012821:Silanes; D013113:Spin Labels; D012822:Silicon Dioxide; D012825:Silicon