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在普通聚酰亚胺涂层的石英毛细管内,已二醇二甲基丙烯酸酯作为交联剂兼作单体,异丙醇、N,N-二甲基甲酰胺和聚乙烯基吡咯烷酮为三元致孔剂,Irgacure 1800为光引发剂,通过原位紫外光引发聚合制备了整体柱。采用自组装的微流液相系统对所制备的有机聚合物整体柱进行了性能评价,基线分离了硫脲、苯、甲苯、乙苯、萘和联苯,其中对硫脲的最低理论塔板数可达到9600/m。考察了PVP致孔剂比例对整体柱孔隙率的影响,同时通过扫描电子显微镜对不同配方整体材料的形貌进行了结构表征。
In common polyimide-coated quartz capillaries, diol dimethacrylate as a cross-linking agent doubles as a monomer, isopropanol, N, N-dimethylformamide and polyvinylpyrrolidone are ternary Porogen, Irgacure 1800 is a photoinitiator, monolithic columns are prepared by in situ UV-initiated polymerization. The self-assembled microfluidic liquid system was used to evaluate the performance of the prepared monolithic organic polymer column. Thiourea, benzene, toluene, ethylbenzene, naphthalene and biphenyl were separated on the baseline. Among them, the lowest theoretical plate of thiourea The number can reach 9600 / m. The effect of the proportion of PVP porogen on the porosity of the monolithic column was investigated. The morphology of the monolithic materials was characterized by scanning electron microscopy.