抄録
The surface modification of nanostructured inorganic silica particles with polymeric material is an area of increasing research activity due to the beneficial properties these materials possess. Controlling the surface properties and mastering its modification at the nanometer scale are critical issues for performances and applications of nanoparticles. The chemical treatment and functionalization of the nanoparticle surface can be used to enhance and/or control the nanoparticle's overall properties for targeted applications such as in microelectronics. In this study, we modified the surface of silica nanoparticles with methyl methacrylate by UV-induced graft polymerization. The polymer grafted silica particles were analyzed using scanning electron microscopy (SEM) and FT-Raman spectroscopy. Substantial increase in average particle size was observed by SEM image analysis after UV-induced grafting of methyl methacrylate onto pure silica particles. FT-Raman spectroscopy and XPS studies of these materials revealed the successful grafting of methyl methacrylate onto the silica surface. The formation of a covalent bonding between the PMMA and silica surface was indicated by FT-Raman spectra. Thermogravimetric analysis of the PMMA-grafted silica particles indicated the polymer content in good agreement with SEM photographs.
