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以二乙烯基苯(DVB-55)和二乙二醇二甲基丙烯酸酯(DGD)为共聚单体,采用沉淀聚合法在乙腈溶剂中一步制得了聚(二乙烯基苯-co-二乙二醇二甲基丙烯酸酯)微球[P(DVB-DGD)]。用FTIR、SEM和BET等方法对P(DVB-DGD)进行表征,结果表明,两种单体在聚合过程中实现了共聚,数均粒径为3.6μm的单分散微球表面未见大孔结构,微球比表面积为2.9 m2/g,平均孔径为9.1 nm。以两组试样为探针分子,采用反相液相色谱模式考察了P(DVB-DGD)填充的新型固定相的色谱性能,结果显示,组分获得了尖锐对称的峰形。色谱柱呈现了较高柱效和良好色谱性能,表明沉淀聚合在HPLC固定相方面具有较好应用前景。
Using divinylbenzene (DVB-55) and diethylene glycol dimethacrylate (DGD) as comonomers, poly (divinylbenzene-co-diethyl Glycol dimethacrylate) microspheres [P (DVB-DGD)]. The characterization of P (DVB-DGD) by FTIR, SEM and BET showed that the two monomers were copolymerized in the polymerization process. No monodisperse particles were observed on the surface of monodispersed microspheres The microspheres had a specific surface area of 2.9 m2 / g and an average pore diameter of 9.1 nm. The chromatographic properties of the new stationary phase packed with P (DVB-DGD) were investigated by reversed-phase liquid chromatography with two sets of probes as probe molecules. The results showed that the components were sharply symmetrical. The column exhibited high efficiency and good chromatographic performance, indicating that the precipitation polymerization has good application prospects in the HPLC stationary phase.