Abstract
The mechanism of surface treatment of glass filler was investigated in the present study in order to increase the mechanical strength of composite resin.The authors synthesized ω-methacryloxy-alkyl-trimethoxysilanes(ω-MATS)with longer chain lengths than γ-methacryloxy-propyl-trimethoxysilane.Silica glass plates were treated with those silane coupling agents.It was examined how the contact angle of water and the bonding strength of polybis-GMA resin on silane treated glass surface depend upon the chain lengths of ω-MATS.It was concluded that the longer the alkylene chains of the silane agents, the more effective the treating effects.From the experiments of washing the silane treated surface by organic solvents it was found that the formation of the chemically absorbed monolayer of silane coupling agents on glass plates was essential for the adhesion of polybis-GMA resin to glass plates.Therefore, it was emphasized that the multilayer of absorbed silane coupling agents played an important role in adhesion.
