Manipulation of the viscosity behavior of wormlike micellar gels by changing the molecular structure of added perfumes
Manipulation of the viscosity behavior of wormlike micellar gels by changing the molecular structure of added perfumes
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DOI：
10.1016/j.colsurfa.2014.01.003
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发表时间：
2014-09-20
影响因子：
5.2
通讯作者：
Aramaki, Kenji
中科院分区：
文献类型：
--
作者：
Kamada, Miho;Shimizu, Soichiro;Aramaki, Kenji
我们研究了微量的香料和油对胶束溶液的流变性能的影响，形成在水/十二烷基硫酸钠（SDS）/三（oxidase）十二烷基醚（C12 EO 3）系统，它给出了最大的零剪切粘度作为一个函数的表面活性剂混合分数由于蠕虫状胶束的形成。通过加入高极性香料和油（9-癸烯-1-醇、1-癸醇、l-薄荷醇、香叶醇和α-萜品醇），粘度峰向较低疏水表面活性剂组合物移动，并且粘度峰移动的程度对于直链分子最大，而对于支链或环状分子较小。动态频率测试表明，不同高极性香料和油体系的零剪切粘度行为由于弛豫时间行为的变化而变化。直链分子可以很好地穿透胶束的栅栏层，并且穿透可以被支链或环状分子结构中断。另一方面，通过添加低极性香料和油（对伞花烃、六氢枯烯、丁基苯、d-柠檬烯和癸烷），粘度曲线的行为对于癸烷和对于其它分子是完全不同的，即癸烷降低粘度峰而没有表面活性剂混合级分的移位，而其它分子表现为高极性分子。(C)2014爱思唯尔有限公司版权所有。
We studied the effect of a trace amount of perfumes and oils on the rheological properties of micellar solutions formed in a water/sodium dodecyl sulfate (SDS)/tri(oxyethylene) dodecyl ether (C12EO3) system which gives a maximum zero-shear viscosity as a function of surfactant mixing fraction due to wormlike micelle formation. By adding high-polarity perfumes and oils (9-decen-1-ol, 1-decanol, l-menthol, geraniol and alpha-terpineol), the viscosity peak shifts to lower hydrophobic surfactant composition and the degree of the viscosity peak shift is the largest for the linear-chain molecules and smaller for the branched or cyclic molecules. Dynamic frequency tests show that the zero-shear viscosity behavior for different high-polarity perfume and oil systems varies due to the change in the relaxation time behavior. The linear-chain molecules can penetrate well in the palisade layer of micelles and the penetration could be interrupted by branched or cyclic molecular architecture. On the other hand, by adding low-polarity perfumes and oils (p-cymene, hexahydrocumene, butylbenzene, d-limonene and decane), the behavior of the viscosity curve is quite different for decane and for other molecules, i.e. decane decreases the viscosity peak without shift of surfactant mixing fraction whereas other molecules behave as high-polarity molecules. (C) 2014 Elsevier B.V. All rights reserved.