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《Journal of Beijing University of Chemical Technology(Natural Science Edition)》 2013-01
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Preparation and evaluation of molecular imprinted composite membranes for chiral resolution of ibuprofen

ZHAO Xiao QIN PeiYong(College of Life Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China)  
Molecular imprinted membranes of S-ibuprofen were prepared by the phase inversion technique with cellulose acetate-β-cyclodextrin copolymer(P(CA-co-β-CD)).To characterize P(CA-co-β-CD),a biosensor was used to measure its grafting ratio,and P(CA-co-β-CD) polymers with different grafting ratios were used to prepare membranes.A copolymer-DMF solution with a S-ibuprofen template was coagulated in water at 20 ℃.Increasing P(CA-co-β-CD) grafting ratio resulted in an increase in S-ibuprofen recognition properties of the resulting membrane.The S-ibuprofen imprinted membrane prepared with P(CA-co-β-CD) showed good selectivity to S-ibuprofen.Surface and cross-section morphologies of the membranes were analyzed by scanning electron microscopy.High-performance liquid chromatography was used for the quantification of ibuprofen in the isolated fraction.Under the optimum conditions of β-CD grafting yield of 29.01%(mass fraction),polymer mass fraction of 12.5%,and a concentration ratio of CA to S-Ibu of 1∶10,the separation factor reached a maximum value of 2.09.
【Fund】: 国家自然科学基金(21276017);; 国家“863”计划(2012AA021404);; 国家“973”计划(2011CB710805)
【CateGory Index】: TQ463
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