物理化学学报 >> 1998, Vol. 14 >> Issue (08): 747-751.doi: 10.3866/PKU.WHXB19980815

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十二烷基硫酸钠/聚氧乙烯体系饱和蒸汽压和表面张力

海明潭, 高洁, 韩布兴, 闫海科, 刘芸, 韩其勇   

  1. 中国科学院化学研究所，北京 100080;北京科技大学理化系，北京 100083|清华大学化学系，北京 100084
  • 收稿日期:1997-10-09 修回日期:1997-12-01 发布日期:1998-08-15
  • 通讯作者: 韩布兴

Vapour Pressure and Surface Tension of Aqueous Solution SDS-PEO

Hai Ming-Tan, Gao Jie, Han Bu-Xing, Yan Hai-Ke, Liu Yun, Han Qi-Yong   

  1. Institute of Chemistry,Academia Sinica,Beijing 100080;Department of Physicochemistry,University of Science and Technology,Beijing 100083|Department of Chemistry,Tsinghua University,Beijing 100084
  • Received:1997-10-09 Revised:1997-12-01 Published:1998-08-15
  • Contact: Han Bu-Xing

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关键词: 聚氧乙烯, 十二烷基硫酸钠, 蒸汽压, 表面张力

Abstract:

Vapor pressure and surface tension of the aqueous solution of sodium dodecyl sulfate(SDS)/polyethylene oxide(PEO) were measured at 298.15, 308.15 and 318.15K respectively, the concentration of PEO was 0.5%, and the concentration of SDS (mSDS ) was up to 80 mmol•kg-1 The activity coefficient of water at different temperatures was calculated. The effect of intermolecular interactions on the vapour pressure was discussed. From vapor pressure and surface tension data, the critical aggregate concentration (CAC) and polymer saturation point (PSP) were obtained.

Key words: Polyethylene oxide, Sodium dodecyl sulfate, Vapor pressure, Surface tension