物理化学学报 >> 2009, Vol. 25 >> Issue (01): 178-182.doi: 10.3866/PKU.WHXB20090132

研究论文 上一篇    下一篇

反相微乳液模板法合成介孔聚苯乙烯

路霞; 唐静; 范玉冰; 胡军; 刘洪来   

  1. 华东理工大学化学系, 结构可控先进功能材料及其制备教育部重点实验室, 上海 200237
  • 收稿日期:2008-07-29 修回日期:2008-10-10 发布日期:2008-12-31
  • 通讯作者: 胡军 E-mail:junhu@ecust.edu.cn

Synthesis of Mesoporous Polystyrene Using Reversed Microemulsion Template Method

LU Xia; TANG Jing; FAN Yu-Bing; HU Jun; LIU Hong-Lai   

  1. Laboratory for Advanced Materials, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China相一致.
  • Received:2008-07-29 Revised:2008-10-10 Published:2008-12-31
  • Contact: HU Jun E-mail:junhu@ecust.edu.cn

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摘要： 提出并实施了反相微乳液为模板合成介孔聚合物的新方法. 通过考察氯仿/CTAB/水三元系反相微乳液的稳定性, 以及均相微乳液粒径变化规律, 得到了三元反相微乳液体系的稳定区域. 以(NH4)2S2O8为引发剂, 利用此反相微乳液为模板合成得到介孔聚苯乙烯材料. 产物的XRD图谱中有两个明显的衍射峰, 对应的晶面间距离d分别为2.6和1.3 nm, 1/d值之比等于1:2, 为层状结构. N2气吸附/脱附曲线表明大部分孔径为1.7 nm, 与动态光散射测得的微乳液液滴的尺寸相一致.

关键词: 介孔材料, 聚苯乙烯, 反相微乳液, 模板, 层状结构

Abstract: Using a reversed microemulsion as template, we developed a new and convenient synthesis method for mesoporous polymer materials. Based on a study of the stability and sizes of microemulsions at different mass ratios of CHCl3/CTAB/H2O, a stable reversed microemulsion region was discovered. The stable reversed microemulsion was used as a reaction system for the preparation of mesoporous polystyrene. The initiator (NH4)2S2O8 was dissolved in the reversed microemulsion’s water core and polymerization of styrene was initiated at the oil-water interface of the microemulsion. With one intense and another weak diffraction peak, the synthesized polystyrene gave a typical XRD pattern for a lamellar mesostructure. The corresponding lamellar spacing of the (100) and (200) planes were 2.6 and 1.3 nm, respectively. The N2 adsorption/desorption isothermal suggested that the average pore size of the mesoporous polystyrene was mostly 1.7 nm which coincided with the size of water drops in the reversed microemulsion.

Key words: Mesoporous material, Polystyrene, Reversed microemulsion, Template, Lamellar structure