Preparation and characterization of poly(methyl methacrylate)/alumina nanocomposites

Silicane coupling agent KH-570 was applied to the surface modification of nano Al2O3.The modified nano Al2O3 was dispersed in methyl methacrylate.The in-situ polymerization was used to prepare PMMA/Al2O3 composites,in which azodiisobutyronitrile was used as initiator.FT-IR,UV,DSC and TG were applied to characterize the prepared composites.The UV experimental results demonstrated that anti ultraviolet capability of the composites was obtained owing to the adding of Al2O3.With the increasing of the mass fraction of Al2O3,the anti ultraviolet capability of the composites increased gradually.The experimental results of Tg and solubility of PMMA/Al2O3 composites revealed that the heat stability and solubility of the composites increased with the increasing of the mass fraction of Al2O3.Meanwhile,the molecular weight of PMMA in the composites increased with the increasing of the mass fraction of Al2O3.