Abstract:Ferulic acid molecularly imprinted composite membrane(MIM) was prepared via in situ polymerization by UV-irradiation using microfiltration polyvinylidene fluoride (PVDF) membrane as the supported membrane, ferulic acid as template, metnacrylic acid(MAA) as functional monomer and ethylene-glycol dimethyacrylate(EGDMA) as cross-linking agent. MIM was used to extract the ferulic acid. The morphology and structure of the composite membrane were characterized by scanning electron microscopy and infrared spectroscopy. The crystal structure and mechanical properties of the composite membrane were researched by X-ray diffraction and tensile techniques. The binding ability and penetration choosing performance of the composite membrane were researched by static adsorptive method and flat ultrafiltration membrane separator. Results showed that ferulic acid molecularly imprinted composite membrane exhibited excellent combining for the ferulic acid with the combined selective factor 1.9 at the concentration of 0.1 mmol/L. When the membrane permeated for 40 min, penetration trough quantity of imprinted compo-site membrane was 5.16 μmol/cm2 for ferulic acid. Compared with cinnamic acid with the penetration selective factor 1.74, penetrated performance of molecularly imprinted composite membrane was better than the non-imprinted composite membrane.