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以双丙酮丙烯酰胺(DAAM)、丙烯酸(AA)为功能性单体合成了带酮羰基的聚丙烯酸酯核壳乳液,将其与己二酸二酰肼(ADH)、模板分子、致孔剂在室温下交联成膜制备出多孔结构分子印迹乳胶膜(MILM),比较了模板分子与功能单体之间的相互作用,研究了功能单体对MILM分离性能的影响。结果表明,用乳液室温交联成膜法可制备孔隙结构发达的分子印迹膜;三种功能单体与模板分子间相互作用强弱的排序为:ADH体系>DAAM体系>AA体系;ADH、AA和DAAM对MILM交联度的影响均较大,进而影响MILM的渗透性能;与非印迹膜比较,MILM对模板分子表现出选择识别性,分离因子可达到2.0以上。
A polyacrylate core-shell emulsion with ketone carbonyl groups was synthesized with diacetone acrylamide (DAAM) and acrylic acid (AA) as functional monomers. The core-shell emulsion was mixed with adipic acid dihydrazide (ADH), template molecule, porogen The porous structure of molecularly imprinted latex (MILM) membrane was prepared by crosslinking at room temperature. The interaction between the template molecule and the functional monomer was compared. The effect of functional monomer on the separation performance of MILM was also studied. The results showed that molecularly imprinted membranes with well-defined pore structure could be prepared by emulsion cross-linking at room temperature. The order of the interaction between the three functional monomers and the template molecule was: ADH system> DAAM system> AA system; ADH, AA And DAAM on the degree of crosslinking of MILM are larger, thereby affecting the permeability of MILM; compared with non-printed membrane, MILM template molecule showed selective recognition, separation factor can reach 2.0 or more.