Preparation and Surface Modification of SiO<sub>2 </sub>Particles Used in Electronic Ink

In order to improve the surface properties of SiO 2 particles, SiO 2 particles were modified by vinyl triethoxysilane, SiO 2 particles and vinyl triethoxysilane modified SiO 2 particles were characterized by FTIR, SEM and XRD techniques. The results showed that vinyl triethoxysilane has been successfully grafted onto SiO 2 particles and basically there are no changes in the size of SiO 2 particles before and after the modification by vinyl triethoxysilane. XRD results show that the synthesized SiO 2 particles have certain crystallinity.