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Study of monodispersed polystyrene colloidal particles containing fluorine

机译：含氟单分散聚苯乙烯胶体颗粒的研究

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Monodispersed polystyrene colloidal particles containing fluorine were synthesized by two-stage semicontinuous emulsion polymerization in the presence of trifluoroethyl methacrylate (F(3)MA) as a functional co-monomer. And then the colloidal crystal films were fabricated quickly from aqueous colloidal solutions by the vertical deposition method at certain temperature and humidity. The chemical components and thermal property of colloidal particles were determined by Fourier-transform infrared spectrometry and differential scanning calorimetry, respectively. The size and morphology of the particles were characterized by scanning electron microscopy (SEM). The surface element distribution of colloidal crystal films was measured by X-ray photoelectron spectroscopy (XPS). The optical property and water contact angles of the colloidal crystal films were investigated. When the concentration of F(3)MA relative to the total content of monomers was 2.5%, the size and the coefficient of variation (C-v) of colloidal particles were 211 nm and 4.2%, respectively. The colloidal crystal film exhibited high water-contact angles (121.3 degrees). The surface analysis by using XPS revealed that the fluorinated components preferentially enriched at the colloidal crystal film surface. (C) 2008 Wiley Periodicals, Inc.
机译：在功能性共聚单体甲基丙烯酸三氟乙酯（F（3）MA）存在下，通过两步半连续乳液聚合法合成了含氟的单分散聚苯乙烯胶体颗粒。然后在一定的温度和湿度下通过垂直沉积法由胶体水溶液快速制备胶体晶体膜。胶体颗粒的化学成分和热性质分别通过傅里叶变换红外光谱法和差示扫描量热法测定。通过扫描电子显微镜（SEM）表征颗粒的尺寸和形态。胶体晶体膜的表面元素分布通过X射线光电子能谱法（XPS）测量。研究了胶体晶体膜的光学性质和水接触角。当F（3）MA的浓度相对于单体总量为2.5％时，胶体颗粒的大小和变异系数（C-v）分别为211 nm和4.2％。胶态晶体膜表现出高的水接触角（121.3度）。通过使用XPS进行的表面分析表明，氟化组分优先富集在胶体晶体膜表面。 （C）2008 Wiley期刊公司

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