Interfacial Rheology of Mixed Surfactants at the Oil/Water Interface |
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| Authors: | Jinyu Pang Sujun Du Runtian Chang Qiang Pei Dongxia Cui |
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| Affiliation: | 1. Shanxi Transportation Research Institute, Taiyuan, People's Republic of China;2. Key Lab of Highway Construction and Maintenance Technology in Loess Region, Ministry of Transport, PRC, Taiyuan, People's Republic of China |
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| Abstract: | The interfacial rheology of surfactant mixtures (SBT and Tween® 80) at the oil/water interface is investigated using toluene as a model oil. The surfactant ratio in the mixed system has an important impact on the interfacial properties. After adding Tween® 80, the interfacial tension and modulus of SBT show remarkable changes. Compared with the individual SBT or Tween® 80 systems, the interfacial properties of the mixed surfactant system improve, especially at a 1:1 ratio. At the optimum ratio, synergistic adsorption takes place resulting in improved asphalt emulsion stability. |
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| Keywords: | Interfacial rheology Surfactant Oil/water interface Emulsion stability |
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