高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (12): 2375.

• 研究论文 • 上一篇    下一篇

单分散聚苯乙烯微球的制备及表征

张琼钢1, 包德才1,2, 马小军1   

  1. 1. 中国科学院大连化学物理研究所, 大连116023;
    2. 渤海大学化学与食品科学学院, 锦州121000
  • 收稿日期:2003-10-28 出版日期:2004-12-24 发布日期:2004-12-24
  • 基金资助:

    国家自然科学基金(批准号:20176056)资助

Preparation and Characterization of Monodisperse Polystyrene Microspheres

ZHANG Qiong-Gang1, BAO De-Cai1,2, MA Xiao-Jun1   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    2. School of Science of Chemistry and Food, Bohai University, Jinzhou 121000, China
  • Received:2003-10-28 Online:2004-12-24 Published:2004-12-24

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被引次数

20

摘要： 应用膜乳化-液中干燥法成功制备出粒径为2～20μm的单分散聚苯乙烯(PS)微球.PS微球的粒径主要由膜孔径决定,其值约为膜孔径的2倍;PS溶液的浓度对其也有一定的影响.膜乳化过程中的压力对微球粒径的分散性有很大的影响,在一定压力范围内,粒径呈单分散.在分散相中加入致孔剂,制备出表面多孔的PS微球.采用复乳-液中干燥法制备出中空PS微球.

关键词: 膜乳化, 液中干燥, 高分子微球, 单分散

Abstract: Monodisperse polystyrene(PS) microspheres with the size range of 2-20 μm were prepared by membrane emulsification and subsequent drying in liquid technique using the shirasu porous glass(SPG) membrane. The PS microspheres size was about twice of the membrane pore size and was slightly affected by the PS concentration. The distribution of the PS microspheres was strongly dependent on the emulsification pressure, and in a certain pressure range, monodispersed microspheres were obtained. Furthermore, PS microspheres with pores on the surface were prepared by adding toluene into the dispersion phase. The hollow PS microspheres were obtained by drying in liquid technique based on the formation of multiple W/O/W emulsions.

Key words: Membrane emulsification, Drying in liquid, Polymer microspheres, Monodisperse

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