物理化学学报 >> 1998, Vol. 14 >> Issue (02): 147-153.doi: 10.3866/PKU.WHXB19980210

研究论文 上一篇    下一篇

SDS胶束对孔雀绿褪色反应的影响

张元勤, 曾宪诚, 余孝其, 田安民   

  1. 四川大学化学系，成都 610064
  • 收稿日期:1997-05-15 修回日期:1997-09-22 发布日期:1998-02-15
  • 通讯作者: 曾宪诚

Effect of SDS Micelles and Premicelles on the Alkaline fading of Malachite Green

Zhang Yuan-Qin, Zeng Xian-Cheng, Yu Xiao-Qi, Tian An-Min   

  1. Department of Chemistry,Sichuan University,Chengdu 610064
  • Received:1997-05-15 Revised:1997-09-22 Published:1998-02-15
  • Contact: Zeng Xian-Cheng

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摘要：

研究了十二烷基硫酸钠（SDS）表而活性剂胶束和预胶束对孔雀绿褪色可逆反应的影响，建立了1－1型可逆反应的胶束催化模型和预胶束催化模型，获得了胶束相中正逆反应的速率常数和预胶束的平均聚集数．结果表明，SDS胶束和预胶束对正反应有禁阻作用，而对逆反应有催化作用．

关键词: 胶束, 预胶束, 胶束催化, 可逆反应, 孔雀绿, 十二烷基硫酸钠(SDS)

Abstract:

Effect of SDS micelles and premicelles on the alkaline fading reversible reaction of malachite green has been studied. Micellar and premicellar catalytic models for the 1-1 type reversible reaction have been proposed.
The rate constants of forward and backward reactions and equilibrium constants of the alkaline fading reversible reaction of malachite greed in micellar phase have been obtained by the micellar model. Under premicellar condition the average number of SDS molecules per substrate molecule with n detergent molecules have been obtained by the premicellar catalytic model.
The results indicate that both SDS micelles and premicelles exhibit an inhibiting effect for the forward reaction. While they exhibit an accelerating effect for the backward reaction. These results were reasonably accounted for with electrostatic interaction.

Key words: Micelle, Premicelle, Micellar catalysis, Malachite green, Composite reaction, SDS(Sodium dodecyl sulphane)