以活性自由基聚合法制备硅球表面修饰的色谱固定相  

Preparation of Suferical Modificated Silica as Chromatographic Stationary Supporting Material by Using the Living Radical Polymerization (iniferter) Method

作　　者：李保利[1] 

机构地区：[1]安阳工学院,河南安阳455000

出　　处：《中国西部科技》2008年第31期27-28,24,共3页Science and Technology of West China

摘　　要：研究工作探索了一种新型的基于活性自由基聚合的硅球表面改性的方法。这种方法将引发转移终止剂(initiator-transfer-terminator agent,Iniferter)接枝于硅球表面,在加入单体并引发的条件下,进行硅球表面聚合物包覆改性。由于改性后的硅球表面仍存在Iniferter,可以进行进一步的修饰,得到多层不同性质的表面。本文探索了进行硅球微球表面接枝Iniferter及进行聚甲基丙烯酸异辛酯表面改性的工作,改性后的硅球微球作为色谱固定相,可以分离不同的烷基苯异构体。The method of surface modification of silica sphere based on living free-racical polymerization was studied. After grafting iniferter （initiator - transfer - terminator agent） on the surface, poly - 2 -ethylhxyl methacrylate-coethyleneglycol dimethacrytate was grafted on the surface of the silica sphere. The silica can be grafted to get different type of surface because the iniferter is still on the silica surface. The work of gratting poly - 2 -ethylhxyl methacrylate on the silica surface was studied. Using the grafted silica sphere as stationary phase, isomers of alkylbenzene are separated in the High performance Liquid Chromatography （HPLC）analysis.

关 键 词：聚合物包覆硅胶 活性自由基聚合 INIFERTER 色谱固定相 

分 类 号：O631.5[理学—高分子化学] TB383[理学—化学]