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以脱氢枞胺为模板分子,丙烯酸为功能单体,马来松香乙二醇丙烯酸酯为交联剂,合成了脱氢枞胺分子印迹聚合物,对聚合物的结构和性能进行了表征,对分离提纯脱氢枞胺的性能进行了测定。结果表明,聚合反应的最佳条件为:0.285 g脱氢枞胺(1 mmol)、0.288 g丙烯酸(4 mmol)和4.91 g马来松香乙二醇丙烯酸酯(8 mmol);反应溶剂为氯仿(30 mL),汽油(15 mL),水(300 mL)混合溶剂;引发剂为偶氮二异丁腈(0.27 g);反应时间5 h,反应温度为70~80℃,搅拌速度为300 r/m in。最佳静态吸附条件为:以体积分数为80%的乙醇为溶剂配制脱氢枞胺溶液,质量浓度为2 g/L,分子印迹聚合物为20~40目,吸附温度70℃,振荡速度150 r/m in。脱氢枞胺分子印迹聚合物对脱氢枞胺的静态平衡吸附时间为12 h,吸附量为223 mg/g,平衡解吸时间为12 h,解吸率为95.9%。经分子印迹聚合物分离纯化后的脱氢枞胺质量分数由67.4%提高到98.3%。说明该分子印迹聚合物对脱氢枞胺的特异吸附性能良好,可以达到分离纯化脱氢枞胺的目的。
The dehydroabietylamine molecularly imprinted polymer was synthesized with dehydroabietylamine as a template molecule, acrylic acid as a functional monomer, and maleic rosin ethylene glycol acrylate as a cross-linking agent. The structure and properties of the polymer were characterized. The performance of separating and dehydroabietylamine was tested. The results showed that the optimal conditions for the polymerization were as follows: 0.285 g dehydroabietylamine (1 mmol), 0.288 g acrylic acid (4 mmol) and 4.91 g maleic rosin ethylene glycol acrylate (8 mmol); the reaction solvent was chloroform 30 mL), petrol (15 mL) and water (300 mL). The initiator was azobisisobutyronitrile (0.27 g). The reaction time was 5 h, the reaction temperature was 70-80 ℃ and the stirring speed was 300 r / m in. The optimum static adsorption conditions were as follows: the dehydroabiety amine solution was prepared with 80% ethanol as the solvent, the mass concentration was 2 g / L, the molecularly imprinted polymer was 20-40 mesh, the adsorption temperature was 70 ℃ and the oscillation speed was 150 r / m in. Dehydroabietylamine molecularly imprinted polymer on dehydroabietylamine dehydroabiety amine equilibrium equilibrium adsorption time of 12 h, adsorption capacity of 223 mg / g, equilibrium desorption time of 12 h, desorption rate of 95.9%. The mass fraction of dehydroabietylamine separated and purified by molecularly imprinted polymer increased from 67.4% to 98.3%. Indicating that the molecularly imprinted polymer has good specific adsorption performance on dehydroabietylamine and can achieve the purpose of separating and purifying dehydroabietylamine.