用原位聚合法制备球形多孔高聚物玻璃毛细管柱及其保留行为的考察

Preparation of Organic Porous Bead Polymer Glass Capillary Porous Layer Open Tubular Column by in situ Polymerization and Investigation on Its Retention Behavior

以乙基乙烯苯为单体,二乙烯苯为交联剂,采用原位聚合法制备出球形多孔高聚物PLOT柱。球形颗粒大小为1μm左右,层厚可根据反应物浓度进行控制,一般为10～20μm。实验表明,水对柱子的保留行为没有影响,对低碳烃,氯代烃极性和非极性混合物等都有较好的色谱分离性能。

The organic porous bead polymer glass capillary porous layer open tubular(PLOT)column is prepared by in situ copolymerization of ethylvinylbenzene-divinylbenzene. Electron micrographs of the polymer coating showed that the polymer had a bead structure and was about 1μm in size. The thickness of the polymer coating layer can be controlled within10 - 20μm by reactant concentration. The effect of water on the power of separation of the OPPLOT-Q type column was described. It is shown that aqueous samples do not affect the separating ability of the column. The porous polymer is good in separation of low molecular-weight hydrocarbons, chlorohydrocarbons, polar and non-polar mixtures. It has the advantage of high efficiency and highly speed separation, and has the unique retention performance of organic porous bead polymer packing.