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Abstract: Caffeine complex imprinted polymeric membranes are prepared using polypropylene as a support membrane, acrylamide as a functional monomer and ethylene glycol dimethacrylate as a crosslinker. The imprinted membranes are analyzed by FT-IR, thermogravimetric analysis(TGA) and scanning electron microscope (SEM) to determine the optimal reaction conditions, the structure of imprinted membranes is different from the blank membrane, the surface of the support membrane is covered with an imprinted polymer layer after polymerization. Scatchard analysis indicates that there are two binding sites in the molecularly imprinted membranes. The optimum polymerization condition is 0.2 mmol caffeine, 0.8 mmol acrylamide and 2 mmol ethylene glycol dimethacrylate in acetonitrile at 60 °C for 48 h.
Template and target information: caffeine
Author keywords: molecularly imprinted membranes, caffeine, separation techniques, Specific binding