物理化学学报 >> 2001, Vol. 17 >> Issue (06): 560-564.doi: 10.3866/PKU.WHXB20010618

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环烷酸氨皂W/O微乳液的溶水性与内聚能理论

王桂清;陈巧云;李荣喜;罗奇志   

  1. 湘潭大学化学系, 湘潭　411105;湖南建材工业学校,湘潭　411103
  • 收稿日期:2000-09-12 修回日期:2001-01-25 发布日期:2001-06-15
  • 通讯作者: 王桂清 E-mail:WGQ0798@sina.com

Solubization of Microemulsion of Naphthenic Acid Saponified by NH3•H2O and Theory of Cohesive Energies

Wang Gui-Qing;Chen Qiao-Yun;Li Rong-Xi;Luo Qi-Zhi   

  1. Department of Chemistry,Xiangtang University,Xiangtan　411105; Hunan Building and Material School,Xiangtan　411103
  • Received:2000-09-12 Revised:2001-01-25 Published:2001-06-15
  • Contact: Wang Gui-Qing E-mail:WGQ0798@sina.com

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关键词: 环烷酸, 微乳液, 溶水量, 内聚能理论, 皂化, 助表面活性剂

Abstract: The solubization of the W/O microemulsion of NA(naphthenic acid)/kerosene/NH3•H2O system has been investigated.The effect of salt,cosurfactant (-alcohol) on solubization of the microemulsion has been studied by the theory of cohesive energies(theory of Rratio).The results show that theory of R-ratio mayexplain the effect of concentration of salt,such as LiCl,NaCl,KCl,NaNO3,Na2SO4,NH4Cl,on maximum solubization (Φm) of the microemulsion,but can not explain the differences of the effect of these salt on Φm(to see Fig.1).We have found that,the rateQ(Q=z/r) of salt was correlated with the effect of salt on Φm(to seeTab.1).Theory of Rratio can only explain the effect of fraction mass of part alconols,such as noctyl and nheptyl and nhexyl alcohol on Φm,but can not explain the effect of isobutyl alcohol,n butyl alcohol,npentanol and isoamyl alconol on Φm (to see Fig.2).So theory of Rratio has it's limitations in explaination of the phenomenons of solubization of W/O microemulsion.

Key words: Naphthenic acid, Microemulsion, Solubization, Theory of cohesive e nergies (theory of R-ratio), Saponified, Cosurfantant