Abstract:

Silicon dioxide sol were synthesized from inorganic salt precursors tetraethylorthosilioate by hydrolysis and condensation in water solvent. The thermal stabilities and micro-structure of the PMMA/TiO2 hybrid materials are characterized with TEM,DSC and TG. The studies revel that the diameter of the particles are about 100nm and the glass transition temperature of PMMA/SiO2 hybrid materials including 20wt% of SiO2 disappears; and the forming of homogeneous inter-penetrated network between organic phase and inorganic phase demonstrate the miscibility of the two species has been improved.

Key words: organic-inorganic hybrid materials, silicon dioxide sol, mathylmethacrylate