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Novel membranes were prepared through covalently coupling of chitosan (CS) to activate nylon membrane after the reaction of the microporous nylon membrane with formaldehyde. Non-specific adsorption on the CS-coated nylon membrane decreased greatly. Yellow 3G-P/Reactive Red 120 were then covalently immobilized onto composite membrane as dye ligands. These Red 120/Yellow 3G-P-CS-membranes were used...
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