Rheological Properties of Wormlike Micelles Formed by Cetyltrimethylammonium Bromide and Sodium Laurate |
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| Authors: | Fei Geng Quan Cao Zhen Li Liqiang Zheng Jianhong Xiao |
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| Institution: | 1. Key Laboratory of Colloid and Interface Chemistry , Shandong University, Ministry of Education , Jinan , P. R. China;2. Gudao Oil Recovery Plant of Shengli Oilfield Co. Ltd., SINOPEC , Dongying , China |
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| Abstract: | Aqueous solutions of mixed cationic and anionic surfactants, cetyltrimethylammonium bromide (CTAB) and sodium laurate (SL), have been studied by steady-state rheology and dynamic oscillatory technique. Wormlike micelles can form due to attractive interactions between the oppositely charged headgroups of CTAB and SL. The wormlike micelles formed by CTAB/SL have been compared with that of cetylpyridinium bromide (CPB)/SL by steady-state rheology method. Effects of additional components such as NaBr, 1-propanol, 1-butanol, polyvinylpyrrolidone (PVP) on the micelles formation process have also been investigated. Cole-Cole plot has been applied to study the dynamic viscoelasticity of the wormlike micelles. |
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| Keywords: | Anionic surfactant cationic surfactant rheology wormlike micelles |
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