物理化学学报 >> 2004, Vol. 20 >> Issue (06): 651-655.doi: 10.3866/PKU.WHXB20040620

研究简报 上一篇    下一篇

改性聚苯乙烯微球的制备及其胶体晶体的组装

黄忠兵;高继宁;汪静;唐芳琼;袁春伟   

  1. 中国科学院理化技术研究所，北京　100101；东南大学分子与生物分子电子学教育部重点实验室,南京　210096；大连水产学院理学院，大连　116023
  • 收稿日期:2003-12-30 修回日期:2004-02-16 发布日期:2004-06-15
  • 通讯作者: 唐芳琼 E-mail:phfqtang@yahoo.com

Preparation of the Modified Polystyrene Microspheres and the Assemble of the Colloid Crystals with High Crystalline Quality

Huang Zhong-Bing;Gao Ji-Ning;Wang Jing;Tang Fang-Qiong;Yuan Chun-Wei   

  1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing　100101; Key Laboratory of Molecular and Biomolecular Electronics of Ministry of Education, Southeast University, Nanjing　210096; School of Science, Dalian Fisheries University, Dalian　116023
  • Received:2003-12-30 Revised:2004-02-16 Published:2004-06-15
  • Contact: Tang Fang-Qiong E-mail:phfqtang@yahoo.com

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摘要： 采用甲基丙烯酸改性的无皂乳液聚合方法制备了尺寸为210 nm、含羧基的聚苯乙烯(PS)微球，用红外光谱、透射电子显微镜和粒度分析仪对其形状和结构进行分析，结果表明，经甲基丙烯酸改性后得到了表面为高密度电荷的单分散性PS微球.用垂直沉积法快速制备出在较大范围(大于1 cm2)呈现很好有序性的密排结构聚苯乙烯胶体晶体薄膜，其在590 nm波长处存在光子带隙.在电子显微镜下，观察到这种胶体晶体是面心立方(fcc)密排结构.

关键词: 无皂聚合, 胶体晶体, 垂直沉积法, 单分散微球

Abstract: Polystyrene microspheres with carboxyl of 210 nm were prepared by emulsifier-free polymerization, and characterized by FTIR, TEM, and dynamics light scattering. The results indicate that the PS microspheres modified by methacrylic acid were monodisperse and highly charged. PS colloidal crystal was fabricated quickly from aqueous colloidal solutions by the vertical deposition method at proper temperature and humidity, and its photonic band gap was at 590 nm. The stacking of PS colloid crystal between (111) planes was determined by electron microscopy (TEM and SEM), and the results indicate that the sample of PS colloid crystal is face-centered-cubic (fcc) structure.

Key words: Emulsifier-free polymerization, Colloidal crystals, Vertical deposition method, Monodisperse microspheres