物理化学学报 >> 2008, Vol. 24 >> Issue (03): 400-404.doi: 10.3866/PKU.WHXB20080308

研究论文 上一篇    下一篇

理想混合表面活性剂表面张力的计算公式及实验验证

涂国云; 王正武; 王仲妮; 刘峰; 肖建毅   

  1. 江南大学化学与材料工程学院, 江苏 无锡 214122; 上海交通大学农业与生物学院食品科学与工程系, 上海 200240; 山东师范大学化学系, 济南 250014
  • 收稿日期:2007-10-19 修回日期:2007-11-27 发布日期:2008-03-10
  • 通讯作者: 王正武 E-mail:tugy828@163.com

Theoretical Expression and Experiment on Surface Tension in Ideal Binary Mixtures of Surfactants

TU Guo-Yun; WANG Zheng-Wu; WANG Zhong-Ni; LIU Feng; XIAO Jian-Yi   

  1. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, P. R. China; Department of Food Science &Technology, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, P. R. China; Department of Chemistry, Shandong Normal University, Jinan 250014, P. R. China
  • Received:2007-10-19 Revised:2007-11-27 Published:2008-03-10
  • Contact: WANG Zheng-Wu E-mail:tugy828@163.com

摘要: 采用Newton迭代法, 给出了两种计算二组分表面活性剂理想混合体系表面张力的显函数简捷表达式, 并通过膦氧化物同系物, 季铵盐混合体系, 以及全氟辛酸铵和全氟壬酸铵混合系列表面张力的实验值和数值解对其精确性进行了验证. 结果表明, 两种迭代法都有很快的收敛速度, 表达式的相对误差都在1%之内.

关键词: 表面活性剂, 理想混合体系, 表面张力

Abstract: Two kinds of equations of the surface tension vs the concentration for ideal binary mixtures of surfactants were acquired with Newton iterative method. The accuracy could be verified by comparison among the values obtained respectively from the iterative, the numerical and observable approaches for surface tension of the ideal binary mixed homology systems C12H25PO(CH3)2/C10H21PO(CH3)2, C12H25 (CH3)3NBr/C16H33 (CH3)3NBr in aqueous solutions (25 ℃), C8F15O2NH4/C9F17O2NH4 in 0.1 mol·L-1 ammonium chloride solution (25 ℃). The results indicated that the astringency velocity of the two kinds of iterative methods was very fast and the relative error of expression was below 1%.

Key words: Surfactants, Ideal mixture system, Surface tension

MSC2000: 

  • O647.2