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Abstract: The molecularly imprinted material was prepared using the surface molecular imprinting technique with reversible addition fragmentation chain transfer with halloysite nanotubes as carrier, aspirin as template molecule, acrylamide as functional monomer, and edma as crosslinker. The imprinted material was characterized by thermal gravimetric (TG). The results showed that a homogeneous imprinted polymer layer was successfully coated onto the surface of modified halloysite nanotubes.The imprinted material exhibited excellent thermal stability compared with the non imprinted material with similar chemical components. The performance of molecularly imprinted material was evaluated by adsorption experiment with Langmuir model analysis and Freundlich model analysis,selective adsorption,and regeneration experiment.The results showed that the recognition sites on the surface of imprinted material were non uniform, and the adsorption process was multilayer adsorption. In contrast to the other analogues, imprinted material showed outstanding selective recognition ability for aspirin.Moreover,after seven cycles, the imprinted material was still favorable for reuse.
Template and target information: aspirin