Salt effect on the rheological properties of the aqueous mixed cationic and anionic surfactant systems
Salt effect on the rheological properties of the aqueous mixed cationic and anionic surfactant systems
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盐对水性混合阳离子和阴离子表面活性剂体系流变性能的影响
DOI：
10.1016/j.colsurfa.2010.03.035
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发表时间：
2010-05
期刊：
影响因子：
--
通讯作者：
Nan, Yan-Qing
中科院分区：
文献类型：
--
作者：
Hao, Li-Sheng;Hu, Peng;Nan, Yan-Qing
研究了在318.15K时，NaBr对0.1 molkg - 1cetyltri甲基溴化铵(CTAB)/十二烷基磺酸钠(AS)/H2O混合体系双水相区域的影响。随着NaBr的加入，含有过量AS的水两相区或含有过量CTAB的水两相区都远离等摩尔线。研究了NaBr对体系在两个各向同性单相区剪切粘度的影响。在每个各向同性单相区，每个mNaBr都观察到一个剪切粘度峰。NaBr的加入使CTAB/AS/H2O混合体系的粘度峰偏离等摩尔线，对CTAB过量的各向同性单相区粘度峰的影响较强，对AS过量的各向同性单相区粘度峰的影响较弱。选取黏度峰附近的7个0.10molkg−1CTAB/AS/H2O各向同性体系，研究NaBr对剪切黏度的影响。7种体系的流变行为和剪切粘度值均随NaBr的加入而改变。在七个选定的体系中加入NaBr可以得到盐诱导的水两相体系。在观察到盐诱导水两相分离之前，所选择的7种体系的共同趋势是随着NaBr的加入而降低剪切粘度，并且以NaBr水溶液为溶剂且非常接近相界的各向同性体系都是触变流体。这些结果表明，盐诱导的两水相体系起源于触变各向同性体系。
The effect of NaBr on the aqueous two-phase regions of 0.10molkg−1cetyltrimethylammonium bromide (CTAB)/sodium dodecyl sulfonate (AS)/H2O mixed system at 318.15K has been investigated. The aqueous two-phase region with excess AS or the aqueous two-phase region with excess CTAB all moves far from the equimolar line with the addition of NaBr. The effect of NaBr on the shear viscosities of the systems at the two isotropic single-phase regions has been also studied. At each isotropic single-phase region, one shear viscosity peak was observed for each mNaBr. The addition of NaBr to the mixed CTAB/AS/H2O systems shifts the viscosity peaks away from the equimolar line, has stronger effect on the viscosity peak at the isotropic single-phase region with excess CTAB, and weaker effect on that with excess AS. Seven 0.10molkg−1CTAB/AS/H2O isotropic systems adjacent to the viscosity peaks were chosen to investigate the effect of NaBr on the shear viscosity. The rheological behaviors as well as the shear viscosity values of the seven chosen systems all change with the addition of NaBr. Salt-induced aqueous two-phase systems can be obtained with the addition of NaBr to the seven chosen systems. Just before the salt-induced aqueous two-phase separation was observed, the common tendency of the seven chosen systems is the decreases of the shear viscosities with the addition of NaBr, and those isotropic systems with NaBr aqueous solutions as solvents and very close to the phase boundaries are all thixotropic fluids. These results indicate that the salt-induced aqueous two-phase systems originate from thixotropic isotropic systems.
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影响因子：
9.9
作者：
Haiqing Yin;Yiyang Lin;Jianbin Huang
通讯作者：
Haiqing Yin;Yiyang Lin;Jianbin Huang
DOI：
10.1021/la063221c
发表时间：
2007-03
期刊：
Langmuir : the ACS journal of surfaces and colloids
影响因子：
--
作者：
Haiqing Yin;Yiyang Lin;Jianbin Huang;Jian-ping Ye
通讯作者：
Haiqing Yin;Yiyang Lin;Jianbin Huang;Jian-ping Ye
影响因子：
9.9
作者：
Mario Roberto Rojas;A. Müller;A. E. Sáez
通讯作者：
Mario Roberto Rojas;A. Müller;A. E. Sáez
DOI：
10.1016/b978-0-12-391927-4.10024-6
发表时间：
1985
期刊：
The European Physical Journal C
影响因子：
--
作者：
J. Israelachvili
通讯作者：
J. Israelachvili
DOI：
10.1039/f29767201525
发表时间：
1976-01-01
期刊：
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II
影响因子：
--
作者：
ISRAELACHVILI, JN;MITCHELL, DJ;NINHAM, BW
通讯作者：
NINHAM, BW