Quaternary ammonium poly(ionic liquid) brushes have successfully been grafted onto silicon surface by surface initiation reverse atom transfer radical polymerization with CuC12/Bpy/AIBN catalytic system.Surface properties of the polymer film and the polymer molecular weight are characterized by the ellipsometry, static water contact angle measurement, Fourier transform infrared spectroscopy attenuated (ATR-FTIR), X-ray photoelectron spectroscopy(XPS), atomic force microscope(AFM)and laser light scattering spectrometer.The results show that the wettability of the surface of poly(ionic liquid) films is closely related to the type of ionic liquids and length of the substitutes.%用表面引发反向原子转移自由基聚合方法RATRP,以CuCl2/Bpy/AIBN为催化体系,在硅片表面成功接枝聚合了一种季铵型离子液体.利用椭圆偏光、静态接触角测定、傅里叶变换衰减红外光谱(ATR-FTIR)、X射线光电子能谱(XPS)、原子力显微镜(AFM)、激光光散射对聚合物分子量、聚合物膜等进行了表征.结果表明,聚合离子液体膜表面的润湿性与离子液体的种类及取代基碳链长度密切相关.
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