The surface of nano-TiO_2 was encapsulated with hydroxyl-propyl-methyl cellulose(HPMC),and then cograftedwith acrylates.Conditions of absorbing and grafting have been studied.Modified nano-TiO_2 particles were charact...The surface of nano-TiO_2 was encapsulated with hydroxyl-propyl-methyl cellulose(HPMC),and then cograftedwith acrylates.Conditions of absorbing and grafting have been studied.Modified nano-TiO_2 particles were characterized byFT-IR spectra,TEM and TG analysis.It was convinced from FT-IR studies that both methyl methacrylate(MMA)and butyl-methacrylate(BMA)were co-grafted onto the surface of nano-TiO_2 particles.TEM images show that the surface of nano-TiO_2 particles was successfully modified by a thick layer of film-like polymer.TG results demonstrate that the decompositiontemperature of HPMC-g-PMMA/PBMA,which has been grafted onto the surface of nano-TiO_2,is 56.9 K higher than that ofHPMC-g-PMMA/PBMA.展开更多
基金This work was funded by the Natural Science Fund of Anhui Educational Committeethe Youth Fund of Anhui Normal University.
文摘The surface of nano-TiO_2 was encapsulated with hydroxyl-propyl-methyl cellulose(HPMC),and then cograftedwith acrylates.Conditions of absorbing and grafting have been studied.Modified nano-TiO_2 particles were characterized byFT-IR spectra,TEM and TG analysis.It was convinced from FT-IR studies that both methyl methacrylate(MMA)and butyl-methacrylate(BMA)were co-grafted onto the surface of nano-TiO_2 particles.TEM images show that the surface of nano-TiO_2 particles was successfully modified by a thick layer of film-like polymer.TG results demonstrate that the decompositiontemperature of HPMC-g-PMMA/PBMA,which has been grafted onto the surface of nano-TiO_2,is 56.9 K higher than that ofHPMC-g-PMMA/PBMA.
