高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (3): 375.

• 论文 • 上一篇    下一篇

碳氟醇与阴离子表面活性剂的相互作用

丁慧君, 刘徐红, 赵国玺   

  1. 北京大学物理化学研究所, 北京, 100871
  • 收稿日期:1991-03-19 出版日期:1992-03-24 发布日期:1992-03-24
  • 通讯作者: 丁慧君

Interaction Between 2,2,3,3,4,4,4-Heptafluorobutanol and Anionic Surfactants

DING Hui-jun, LIU Xu-hong, ZHAO Guo-xi   

  1. Institute of Physical Chemistry, Peking University, Beijing, 100871
  • Received:1991-03-19 Online:1992-03-24 Published:1992-03-24

摘要: 测定了不同比例的C10H21SO4Na-C3F7CH2OH、C7F15COONa-C3H7CH2OH混合水溶液的表面张力,加入C3F7CH2OH可增加阴离子表面活性剂的表面活性;在表面层中,C3F7CH2OH与C10H21SO4Na间分子相互作用比C3F7CH2OH-C7F15COONa体系弱;这是由于CF链与CH链间“互疏”作用的结果;随着C3F7CH2OH浓度增加,对C10H21SO4Na胶团反离子结合度也随之增加。

关键词: 碳氟醇, 表面活性, 反离子结合度

Abstract: The mixed aqueous solution of C3F7CH2OH-C10 H21 SO4Na and C3F7CH2OH-C7H15 COONa was investigated by the surface tension analysis.When C3F7CH2OH is added into the anionic surfactants the surface activity of anionic surfactant is increased.In the surface layer the molecular interaction in the C3F7CH2OH-C10 H21SO4Na system is weaker (with smaller |βσ| value) than that in the C3F7CH2OH-C7F15COONa system; The counterion binding degree of C10H21SO4Na micelles increases with the concentration increase of C3F7CH2OH.

Key words: Fluorocarbon alcohol, Surface activity, Counterion binding degree

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