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含能材料  2015 

CL-20分子印迹聚合物微球的制备及吸附性能

DOI: 10.11943/j.issn.1006-9941.2015.01.005

Keywords: 有机化学 分子印迹聚合物 六硝基六氮杂异伍兹烷(CL-20) 沉淀聚合法

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Abstract:

利用分子印迹技术, 在模板分子六硝基六氮杂异伍兹烷(CL-20)、功能单体丙烯酰胺(AM)、交联剂三羟甲基丙烷三甲基丙烯酸酯(TRIM)的摩尔比为1:7:20, 反应温度为60 ℃的条件下, 采用沉淀聚合法制备了粒径约为1 μm的CL-20分子印迹聚合物微球(CL-20-MIP)。用UV光谱,SEM对其进行了性能测试,研究了CL-20-MIP的吸附和识别性能。结果表明, CL-20与AM之间存在相互作用, 所得产物为规则的球形。在1 mmol·L-1的CL-20/乙醇溶液中, CL-20-MIP和非印迹聚合物(NMIP)对CL-20的平衡吸附量分别为14.02 mg·g-1和6.77 mg·g-1; 吸附过程由伪二级动力学模型和Freundlich方程描述。选择性吸附实验表明, CL-20-MIP对CL-20具有特异性吸附, 对竞争吸附物RDX, TNT的吸附量分别为6.98 mg·g-1和8.46 mg·g-1

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