PREPARATION OF HYDROPHOBIC INTERACTION LIGAND-CONTAINING MEMBRANE BY RADIATION AND THEIR ADSORPTION PROPERTIES OF γ-GLOBULINS

摘要

The hydrophobic ligand-containing hollow polypropylene (PP) membranes were synthesized by the mutual radiation induced graft copolymerization with glycidylmethacrylate (GMA) onto hollow PP membrane followed by the subsequent functionalization with L-phenylalanine. ATR-FTIR, elemental analysis and UV spectroscopy were utilized to characterize copolymer, and degree of grafting,functionalization conversion and γ-globulins adsorption were measured. The degree of grafting on the PP surface increased along with the reaction time and total dose of electron beam. In the subsquent functionalization, the amount of L-phenylalanine increased in accordance with the increase in the degree of grafting; the degree of conversion was about 30%. The results of γ-globulins adsorption experiments showed that adsorption capacity had a maximum value at pH 8.The γ-globulins adsorption capacity in the basic pH region was higher than in the acidic pH region.