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日用化学工业 ›› 2014, Vol. 44 ›› Issue (8): 421-425.doi: 10.13218/j.cnki.csdc.2014.08.094

• 基础研究 •    下一篇

三硅氧烷离子液体水溶液的动态表面张力研究

李恩泽, 杜志平, 李萍, 王国永   

  1. 中国日用化学工业研究院,山西 太原 030001
  • 收稿日期:2014-02-28 出版日期:2014-08-22 发布日期:2019-04-08
  • 通讯作者: 杜志平,教授级高工,电话:(0351)4084691,E-mail:zhipingdu@hotmail.com。
  • 作者简介:李恩泽(1988-),男,河南人,硕士研究生,电话:15525483633,E-mail:tustlienze@126.com。
  • 基金资助:
    国家自然科学基金资助项目(21073234,21103228);“十二五”国家科技支撑计划资助项目(2014BAE03B03);山西省自然科学基金资助项目(2014011014-1);“伽蓝”研究生基金资助项目(312509)

Dynamic surface tension of trisiloxane ionic liquid aqueous solution

LI En-ze, DU Zhi-ping, LI Ping, WANG Guo-yong   

  1. China Research Institute of Daily Chemical Industry,Taiyuan,Shanxi 030001,China
  • Received:2014-02-28 Online:2014-08-22 Published:2019-04-08

摘要: 采用气泡压力张力仪测定了三硅氧烷吡啶类离子液体([Si(3)Py]Cl)和三硅氧烷咪唑类离子液体([Si(3)Mim]Cl)水溶液的动态表面张力,考察了浓度和温度对其动态表面张力的影响。根据Word-Tordai方程对所得数据进行分析,计算得出不同测定条件下离子液体分子吸附初始阶段和长时吸附阶段的扩散系数,得出上述2种离子液体在水中的吸附机理均属于混合动力控制吸附。

关键词: 离子液体, 动态表面张力, 扩散系数, 吸附机理

Abstract: Dynamic surface tension (DST) of trisiloxanepyridinium ionic liquid and trisiloxaneimidazolium ionic liquid aqueous solution were measured with bubble pressure tensiometer.Effects of concentration and temperature on DST were investigated in detail.Data obtained were analyzed in accordance with Word-Tordai equation,and the diffusion coefficients for ionic liquid molecular adsorption in initial time stage and long time stage under different conditions were figured out respectively.The results indicated that the adsorption mechanism of both above said two kinds of ionic liquid belongs to mixed diffusion-kinetic controlled adsorption.

Key words: ionic liquid, dynamic surface tension, diffusion coefficient, adsorption mechanism

中图分类号: 

  • TQ423.4