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制备腈菌唑分子印迹聚合物(MMIP),研究其特异识别能力。以腈菌唑为模板分子,α-甲基丙烯酸(MAA)为功能单体,采用本体聚合法合成分子印迹聚合物(MIP)。考察不同致孔剂对模板物质与功能单体相互作用力的影响。研究了采用不同比例模板分子与功能单体合成的聚合物对腈菌唑吸附量的影响,通过静态吸附试验研究其吸附性能,并做Scatchard分析。结果表明:当乙腈和四氢呋喃为致孔剂时,腈菌唑的最大吸收波长发生红移,分别红移4 nm和2 nm,吸收峰增强。通过Scatchard分析可知,腈菌唑与MAA形成了一类结合位点,其解离常数KD=1.36 mmol/L。四氢呋喃和乙腈适用于腈菌唑分子印迹聚合物的制备。合成的印迹聚合物对模板分子具有很强的亲和力和良好的识别能力,可以作为腈菌唑的分离材料。
Myclobutanil molecularly imprinted polymer (MMIP) was prepared and its specific recognition ability was studied. Using myclobutanil as a template molecule and α-methacrylic acid (MAA) as a functional monomer, a molecularly imprinted polymer (MIP) was synthesized by bulk polymerization. The effects of different porogen on the interaction between template material and functional monomer were investigated. The effect of the polymers synthesized by using different proportions of template molecules and functional monomers on the adsorption of myclobutanil was studied. The adsorption properties of myclobutanil were studied by static adsorption experiments and analyzed by Scatchard analysis. The results showed that when acetonitrile and tetrahydrofuran were used as porogen, the maximum absorption wavelength of myclobutanil was red shifted to 4 nm and 2 nm, respectively, and the absorption peak increased. Scatchard analysis showed that myclobutanil and MAA formed a class of binding sites, the dissociation constant KD = 1.36 mmol / L. Tetrahydrofuran and acetonitrile are suitable for the preparation of myclobutanil molecularly imprinted polymers. The synthesized imprinted polymer has strong affinity to template molecules and good recognition ability, and can be used as a material for the isolation of myclobutanil.