华东师范大学学报(自然科学版) ›› 2010, Vol. 2010 ›› Issue (5): 126-133.

• 应用化学 • 上一篇    下一篇

单分散PS微球的制备及其胶体晶体的组装

宋 娟1,2, 陈启明2, 严 亚2,3   

  1. 1. 泰州师范高等专科学校,江苏 泰州 225300； 2. 华东师范大学 化学系,上海 200062； 3. 大理学院 药学院,云南 大理 671000.
  • 收稿日期:2009-04-01 修回日期:2009-08-01 出版日期:2010-09-25 发布日期:2010-09-25
  • 通讯作者: 陈启明

Synthesis of monodisperse PS microspheres and self-assembly of the colloidal crystals

SONG Juan1,2, CHEN Qi-ming2 , YAN Ya2,3   

  1. 1. Taizhou Teacher’s College, Taizhou Jiangsu 225300, China;2.Department of Chemistry, East China Normal University, Shanghai 200062, China;3. College of Pharmacy, Dali University, Dali Yunnan 671000, China.
  • Received:2009-04-01 Revised:2009-08-01 Online:2010-09-25 Published:2010-09-25
  • Contact: CHEN Qi-ming

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摘要： 无皂乳液聚合法制备了不同尺寸单分散的PS微球,采用离心法和垂直沉降法将之组装成具有光子带隙的人工欧泊.采用扫描电子显微镜(SEM)和可见-紫外光度计对PS胶体晶体的形貌、结构和光学性能进行了观察测试.结果表明厚度较大的PS胶体晶体可以通过离心法组装制得,当转速为1 000 r/min、干燥温度为40 ℃时可以组装得到高质量的PS胶体晶体,而垂直沉降法则较适合组装薄型的胶体晶体.从样品的光学特性讨论了适合组装的乳液固含量,改变组装胶体晶体的PS微球粒径可以得到不同的光带隙波长.

关键词: PS 微球, 胶体晶体, 离心法, 垂直沉降, PS 微球, 胶体晶体, 离心法, 垂直沉降

Abstract: Monodisperse polystyrene (PS) colloidal particles were prepared by a quick emulsifier-free emulsion polymerization (EFEP) method, and their highly ordered colloidal crystals were fabricated by both centrifugal method and vertical surface method. Scanning Electron Microscope (SEM) and VIS-UV were used to study the topography, structure and optical properties of the colloidal crystals. The resulting planar samples by centrifugal method were distinctly thicker than that by vertical surface method. PS colloidal crystals by centrifugal method with a velocity of 1 000 r/min and a temperature of 40 ℃ exhibited a highly ordered three-dimensional structure. The optimized assembly conditions were discussed via samples’ optical properties and the transmission spectra showed the peak wavelength suffered a shift with the change of the PS spheres’ diameter.

Key words: colloidal crystal, centrifugal method, vertical surface method, polystyrene microsphere, colloidal crystal, centrifugal method, vertical surface method