Abstract
Hollow TiO2 microspheres have been successfully fabricated from PMMA (core)/TiO2 (shell) composite prepared with a mechanofusion system. The dense and smooth-surfaced shell wall consisted of well-sintered TiO2 particles was obvious after calcination at 1200°C for 6 h when as-received TiO2 was used as a starting material. The surface of the shell wall became rather rough and attachment of fine particles was significant with increasing the MgO content in the starting material. Especially, perfect hollow microspheres were hardly obtained above 40wt% MgO.
