An object of the present invention is to provide a polymer coated magnetic fine polymer by coating an inorganic fine particle with a thin polymer layer under precise control of a polymerization reaction and a method for preparing the same. Onto a surface of the inorganic fine particle the iniferter is fixed and grafted chains are formed on the inorganic fine particle by a living radical polymerization using the iniferter as an initiator which is defined by the following chemical formula:
(wherein X is a hydrophilic atomic group being capable of binding to a surface of the inorganic fine particle, R1 and R2 are each independently selected from a mono-valent hydrocarbyl group which is formed by removing one hydrogen atom from hydrocarbon.)
本发明的目的是在精确控制聚合反应的情况下,在无机微粒上涂覆一层薄聚合物,从而提供一种聚合物涂层磁性微粒聚合物,以及制备这种聚合物的方法。在无机微粒的表面上固定增感剂,并以增感剂为
引发剂,通过活自由基聚合反应在无机微粒上形成接枝链:
(其中 X 是亲
水性原子团,能与无机微粒表面结合;R1 和 R2 分别独立地选自单价烃基,该烃基是通过从碳氢化合物中去除一个氢原子而形成的)。