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Abstract: Molecularly imprinted membranes were prepared with malachite green as template molecule, acrylamide as functional monomer and N,N'-methylenebisacrylamide as cross-linker by surface molecularly imprinted technique(MIT) in the presence of 0.45 μm hydrophilic cellulose ester filter membranes, and the selective permeation characterization of the membranes with the template molecule and its analogues was studied through the competitive permeation experiment. Molecularly imprinted membranes showed a permeation amount of 0.118 mg/cm2 for malachite green after 13 h, and corresponding permeation amounts of only 0.064, 0.057 and 0.044 mg/cm2 for methyl violet, cresol red and bromothymol in single permeation experiments. The permeation amount for malachite green didn't showed great reduce in the competitive permeation experiment, and opposition for its analogues methyl violet.The experiment results show that the molecularly imprinted membrane exhibited the higher permeation selectivity to the template malachite green, and the preferential permeation properties for malachite green in the presence of its analogues methyl violet.
Template and target information: malachite green
Author keywords: molecularly imprinted technique, Surface imprinted technique, Malachite green, permeation