Effect of substrate-water interaction on the wetting behavior in water-oil and substrate-water-oil systems |
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| Authors: | Yuan?Yin-quan Email author" target="_blank">Zou?Xian-wuEmail author Jin?Zhun-zhi |
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| Institution: | (1) School of Physics and Technology, Wuhan University, 430072 Wuhan, Hubei, China;(2) Department of Physics, Xiaogan University, 432100 Xiaogan, Hubei, China |
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| Abstract: | The effects of the substrate-water interaction on the wetting behavior in water-oil and surfactant-water-oil systems confined by one substrate which has the preferential interaction to one species of particles have been investigated by using the free energy analysis and discontinuous molecular dynamic simulations. As the preferential interaction between the substrate and water particles varies from small repulsion to large attraction, the partial drying, partial wetting and complete wetting state are observed in sequence. In addition, the wetting behavior of surfactant aqueous solution on the substrate is not only dependent on the interaction, but also limited by the maximum equilibrium concentration of surfactants at the interface. |
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| Keywords: | wetting behavior wetting transition preferential interaction substrate |
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