| 摘 要： | Acrylonitrile (AN) and maleic anhydride (MA) copolymer has been synthesized by radical polymerization using ammonium persulfate and sodium bisulfite as initiator. The pervaporation properties of the copolymeric membranes prepared have been investigated for the first time. The dependences of pervaporation characteristics on copolymer composition , feed concentration and operating temperature have been studied. In order to improve the separation properties of the copolymeric membranes, the membranes were hydrolyzed with 10 wt% sodium hydroxide or potassium hydroxide aqueous solution. The hydrolyzed membranes containing more than 0. 069 MA mol fraction showed higher tensile strength and separation properties than the original membranes.
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