Adsorption of Molecularly Imprinted Polymers of Salicylic Acid by Differential Pulse Voltammetry

Salicylic acid(SA)molecularly imprinted polymers were synthesized with SA as the template,acrylamide as the functional monomer and ethylene glycol dimethacrylate as the cross-linker.In the buffer solution the adsorption of the polymers was tested by the differential pulse voltammetry.The equilibrium binding experiment results show that the adsorption capacity of SA molecularly imprinted polymers is much higher than that of non-molecularly-imprinted polymers.The selectivity of SA molecularly imprinted polymers was evaluated on the basis of dimethacrylate which has some similar molecular structures.The test confirms that the adsorption of SA molecularly imprinted polymers to SA is always higher than that to4-hydroxybenzoic acid,and salicylic acid molecularly imprinted polymers have a good selectivity for SA.