Studies in the phase behavior of the microemulsions formed by mixed cationic and nonionic surfactants |
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| Authors: | Zhao-yu Diao Ling Li Zhong-ni Wang Juan Lu Wu Zhou |
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| Institution: | 1.College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education,Shangdong Normal University,Jinan,China |
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| Abstract: | The middle-phase behavior for the systems of cetyltrimethylammonium bromide (CTAB)/poly-ethyleneglycol-9-monododecyl ether
(AEO9)/alcohol/oil/brine and CTAB/octylphenolpolyoxyethylene-10-ether (Triton X-100)/alcohol/oil/brine have been studied with ɛ-β
fishlike phase diagram method. The interfacial layer composition was determined, and some significant physicochemical parameters
are derived from the hydrophilic-lipophilic balance plane equation. The effects of different alcohols, oils, temperature and
inorganic salt (NaCl) on the middle-phase behavior of microemulsion formed by composite CTAB/AEO9 systems were also investigated systematically. The effects of different factors on the phase behavior of microemulsions formed
by CTAB/AEO9 and CTAB/TX-100 systems were compared. The results suggest that the solubilization of CTAB/AEO9 microemulsion is higher than that of CTAB/TX-100 system under the same conditions. |
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