The bulk copolymerization of trifluoromethyl methacrylate（TFEMA） and isobornyl methacrylate（IBOMA） using azodiisobuty-ronitrile（AIBN） as initiator was studied with emphasis on the reactivity ratio of two monomers and the copolymer properties with various monomer doses.The monomer reactivity ratios were calculated by using KT and FR graphical methods and YBR calculative method.The result indicates that the reactivity ratios of TFEMA and IBOMA are 3.693 and 0.263,respectively.Glass transfer temperature,refraction index and transparence of the copolymer were determined by differential scanning calorimetry,Abbe refractometer and visible ultraviolet spectrophotometer,respectively.

The process of static adsorption of water and hydroquinone on 4A molecular sieve in methyl methacrylate(MMA)at different temperature were investigated.The saturated adsorption capacity of water on 4A molecular sieve in MMA with different water content were calculated and analyzed.The results showed that 4A molecular sieve activated at high temperature had good saturation adsorption on water and hydroquinone in MMA.