화학공학소재연구정보센터
Korea Polymer Journal, Vol.7, No.1, 38-45, February, 1999
Modification of Hollow Fiber Membrane with Amidoxime, Iminodiacetic Acid and Diethylene Triamine by Radiation-Induced Graft Polymerization
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The polyethylene (PE) hallow fiber membrane was modified by radiation-induced grafting of acrylonitrile (AN) and subsequent amidoximation of cyano groups of poly(AN) graft chains to introduce amidoxime group (AO) on the graft chains. The PE hollow fiber membranes were also modified by radiation-introduced grafting of glycidyl methacrylate (GMA) and subsequent iminodiacetation and amination of epoxy group of poly(GMA) graft chains, respectively, to introduce iminodiacetic acid (IDA) and diethylene triamine (DETA) on the graft chains. The adsorption characteristics of UO2+2 and Cu2+ on the modified PE membranes were examined by permeation experiments through the modified PE membranes. The adsorbed amount of UO2+2 on the modified PE membrane with the AO group increased by increasing the content of AO group. The adsorbed amount of Cu2+ on the modified PE membrane with the AO group was small, whereas the adsorbed amount of Cu2+ on the modified PE membrane with the IDA and DETA groups was higher than that of UO2+2. The adsorption of UO2+2 on the PE membrane with the AO, IDA and DETA group was in the following order: AO group>IDA group>DETA group, while the adsorption of Cu2+ on the modified PE membrane was in the following order: IDA group>DETA group>AO group.
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