环烷酸氨皂W/O微乳液的溶水性与内聚能理论

微乳液之所以在许多领域具有重要应用 ,其根本原因之一是因为它有很强的增溶能力 .本实验表明 ,用环烷酸 (Naphthenic Acid,记为 NA)的氨皂做表面活性剂的 W/O微乳液 ,对水或盐水有较强的增溶能力 ,意味着这类微乳液有潜在的应用价值 .此外， NA是石油炼制过程中的一种副产物 ,来源广 ,价格低廉 .因此 ,对影响这类微乳液增溶能力的规律进行研究是有意义的 .本文试图用内聚能理论 (简称 R比理论 )对几种常见的强酸强碱盐、几种醇对环烷酸铵 /煤油 /水组成的 W/O微乳液对水的增溶能力的影响进行解释 ,结果发现 ,R比理论能够解释部分实验…

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

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 may explain the effect of concentration of salt,such as LiCl,NaCl,KCl,NaNO3,Na2SO4,NH4Cl,on maximum solubization (Φ m) of the microemulsion,but can not explain the differences of the effect of these salt on Φ m(to see Fig.1).We have found that,the rateQ(Q=z/r) of salt was correlated with the effect of salt on Φ m(to see Tab.1).Theory of R-ratio can only explain the effect of fraction mass of part alconols,such as n-octyl and n-heptyl and n-hexyl alcohol on Φ m,but can not explain the effect of isobutyl alcohol,n-butyl alcohol,n-pentanol and isoamyl alconol on Φ m (to see Fig.2).So theory of R-ratio has it's limitations in explaination of the phenomenons of solubization of W/O microemulsion.