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Surfactant-mediated wetting and spreading: Recent advances and applications
Institution:1. School of Chemical and Environmental Engineering, Jiujiang University, Jiujiang 332005, China;2. Jiangxi Province Engineering Research Center of Ecological Chemical Industry, Jiujiang 332005, China
Abstract:Surfactant-mediated wetting and spreading are ubiquitous. Understanding of these phenomena in-depth allows precise tailoring of wetting performance which can contribute to global challenges in the food supply chain, healthcare, ecology and industrial processes. The first part of this review shows how surfactants can be used to improve the efficacy of fertilisers and pesticides in agriculture, enhanced oil recovery, treatment of lung diseases and extinguishing fires involving flammable liquids. The second part provides analysis of recent studies on wetting and spreading over solid substrates. It includes discussion on the effect of surfactants on the outcome of the impact of liquid drops, the wetting state after impact, autophobic effect and spreading kinetics for both partial and complete wetting, including superspreading. Perspectives of future development in the area of surfactant-assisted wetting and spreading on solid substrates are outlined.
Keywords:Agricultural adjuvants  Enhanced oil recovery  Lung diseases therapy  Firefighting foams  Partial and complete wetting  Superspreading
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