| abstract |
The invention belongs to the technical field of functional material preparation, and particularly relates to a preparation method and application of a Li-IIMs (lithium-ion-exchange membranes) ion imprinted membrane. According to the invention, polydimethylsiloxane is modified through self-polymerization reaction of dopamine to form a strong-viscosity dopamine layer, then succinic anhydride is hydrolyzed on the surface of a dopamine-functionalized substrate to form carboxyl, and the carboxyl modified PDMS is further modified to construct ester modified PDMS; further taking calix [4] arene as a ligand and ethylene diamine tetraacetic acid as an eluent to prepare the Li-IIMs imprinted membrane. Compared with the traditional preparation method of the membrane material, the imprinted membrane prepared by the invention has the advantages of easy recovery, convenient subsequent separation, no secondary pollution to separated substances and the like, and well overcomes the defects of difficult recovery, easy generation of secondary pollution and the like of the existing lithium ion separation polymer. |