| Phase Behavior and Dielectric Spectroscopy of the Sodium Dodecyl Trioxyethylene Sulfate／n－Butanol／Water System |
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| 引用本文： | 魏素香,牟建海,赵孔双,雷建平,李干佐.Phase Behavior and Dielectric Spectroscopy of the Sodium Dodecyl Trioxyethylene Sulfate／n－Butanol／Water System[J].中国化学,2003,21(10):1290-1296. |
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| 作者姓名： | 魏素香 牟建海 赵孔双 雷建平 李干佐 |
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| 作者单位： | Department of Chemistry，Key Laboratory for Colloid & Interface Chemistry of State Education Ministry，Department of Chemistry，Department of Chemistry，Key Laboratory for Colloid & Interface Chemistry of State Education Ministry South China Normal University，Guangzhou，Guangdong 510631，China，Shandong University，Jinan，Shandong 250100，China，Beijing Normal University，Beijing 100875，China，South China Normal University，Guangzhou，Guangdong 510631，China，Shandong University，Jinan，Shandong 250100，China |
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| 基金项目： | ProjectsupportedbytheVisitingScholarFoundationofKeyLaboratoryinChineseUniversity,theNationalNaturalScienceFoundationofChina (No .2 0 2 73 0 10and 2 9873 0 15)theNaturalScienceFoundationofGuangdongProvinceandtheBasicStudyProjectofGuangzhouCity |
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| 摘 要： | Introduction Itiswellknownthatsurfactantsinanaqueoussolu tioncouldformmicellesataconcentrationhigherthanthecriticalmicelleconcentration (cmc) .Knowledgeofalcoholsolubilizationinaqueousmicellesolutionsisimportantinunderstandingtheaggregationbehaviorofsuchsystemsandisrelevanttoseveralindustrialprocesses .1Manystudieshavebeenreportedonphasebehaviorofternarysystemsofionicsurfactant,alcohol,andwater.2 7Generally ,inthecaseofshortchainalcohol,atransparent,isotropic ,andlow viscosityphaseappearse…
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| 关 键 词： | 相行为 介电松弛光谱学 十二烷基三氧代乙烯钠 硫酸盐 n-丁醇 水 传导率 介电材料 |
Phase Behavior and Dielectric Spectroscopy of the Sodium Dodecyl Trioxyethylene Sulfate/n-Butanol/Water System |
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| WEI,Su Xiang c MU,Jian Hai a ZHAO,Kong Shuang,b LEI,Jian Ping c LI,Gan Zuo a aKey Laboratory for Colloid & Interface Chemistry of State Education Ministry,Shandong University,Jinan,Shandong ,China b.Phase Behavior and Dielectric Spectroscopy of the Sodium Dodecyl Trioxyethylene Sulfate/n-Butanol/Water System[J].Chinese Journal of Chemistry,2003,21(10):1290-1296. |
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| Authors: | WEI Su Xiang c MU Jian Hai a ZHAO Kong Shuang b LEI Jian Ping c LI Gan Zuo a aKey Laboratory for Colloid & Interface Chemistry of State Education Ministry Shandong University Jinan Shandong China b |
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| Institution: | WEI,Su Xiang c MU,Jian Hai a ZHAO,Kong Shuang,b LEI,Jian Ping c LI,Gan Zuo a aKey Laboratory for Colloid & Interface Chemistry of State Education Ministry,Shandong University,Jinan,Shandong 250100,China b Department of Chemistry,Beijing Normal University,Beijing 100875,China c Department of Chemistry,South China Normal University,Guangzhou,Guangdong 510631,China |
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| Abstract: | The phase diagram of the ternary system of sodium dodecyl trioxyethylene sulfate (SDES)/n‐butanol/water is obtained at (30.0 ± 0.1) °C. There exists a clear, isotropic, and low‐viscosity L phase, which could be divided into W/O micelle, bi‐continuous (B. C.) phase and O/W micelle by conductivity measurements. Dielectric Relaxation Spectroscopy (DRS) measurements are applied to investigate microstructure changes of this system. For samples with a fixed weight ratio, SDES/n‐butanol = 3/7, DRS indicates a structure transition from W/O to O/W micelles via B.C. phase with the increase of water content. For the samples with a fixed weight ratio, SDES/H2O = 4/6, DRS can presents that there exist changes of onefold structure size of W/O micelles as n‐butanol content increases. The results obtained from DRS and their analyses are in good agreement with those from phase diagram and conductivity measurements. |
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| Keywords: | phase behavior conductivity dielectric relaxation spectroscopy micelle |
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