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蒸发自组装法制备聚苯乙烯胶体晶体

宋昌平,刘俊康,倪忠斌,陈明清,刘士荣*   

  1. (江南大学化学与材料工程学院 无锡 214122)
  • 收稿日期:2011-07-25 修回日期:2011-09-13 出版日期:2012-06-10 发布日期:2012-06-10
  • 通讯作者: 刘士荣，副教授; Tel:0510-85917090; Fax:0510-85917763; E-mail:liushirong1@yahoo.com.cn; 研究方向：有机/无机杂化材料
  • 基金资助:
    国家自然科学基金（20876070）资助项目

Preparation of Self-Assembly Polystyrene Sphere Colloid Crystal by a Solvent Evaporation Method

SONG Changping, LIU Junkang, NI Zhongbin, CHEN Mingqing, LIU Shirong*   

  1. (School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China)
  • Received:2011-07-25 Revised:2011-09-13 Published:2012-06-10 Online:2012-06-10
  • Contact: LIU Shirong

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2512

被引次数

10 | 1

摘要： 采用乳液聚合法制得亚微米级聚苯乙烯单分散微球，并用蒸发自组装法在乳液气液界面进行自上而下的层层组装，制得了厚度在450 μm以上的三维有序胶体晶体。 结果表明，影响胶体晶体有序性的关键因素是对蒸发速度的控制，促使胶体晶体规则排列的最主要作用力为溶液的毛细管力。 在胶体晶体组装末期，随着溶剂量的减少，空间阻力逐渐增大，微球对流能力下降，造成胶体晶体的有序性降低。

关键词: 蒸发自组装, 胶体晶体, 聚苯乙烯微球, 毛细管力

Abstract: Sub-micrometer monodispersed polystyrene microspheres were synthesized by the emulsion polymerization technique. The three-dimensional ordered polystyrene colloidal crystals were fabricated on the surface of emulsion through a solvent evaporation method. We have fabricated colloidal crystals with the thickness of more than 450 μm by using this method. It was found that the key factor of preparation of colloidal crystal was the evaporation rate. The capillary force was the main driving force for the regular assembling of the colloidal crystal. With the decrease of solvent, the floating capability of microspheres decreased due to the increase of viscosity and caused the increase of defects.

Key words: solvent evaporation method, colloid crystal, polystyrene microspheres, capillary force

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