Stability of aqueous foam films and foams containing polymers: Discrepancies between different length scales |
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| Institution: | 1. Chemical Engineering Department, College of Engineering, University of Tehran, Iran;2. Polymer Reaction Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, PO Box 14115-114, Tehran, Iran;1. College of Science, China University of Petroleum, Qingdao 266580, Shandong Province, People’s Republic of China;2. Petrolum Production Engineering Research Institute of Huabei Oilfield Company, Renqiu 062552, Hebei Province, People’s Republic of China;3. Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong, Qingdao 266580, Shandong Province, People’s Republic of China;1. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China;2. McDougall School of Petroleum Engineering, University of Tulsa, Tulsa, OK 74104, United States;3. Petroleum Systems Engineering, Faculty of Engineering and Applied Science, University of Regina, Regina, SK S4S 0A2, Canada |
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| Abstract: | Polymer-stabilized foams and foam films have received considerable attention during the past years. This review paper gives an overview of recent studies dealing with polyelectrolyte/surfactant mixtures, proteins, and microgels adsorbed at single air/water interfaces, in foam films and in macroscopic foams. These polymeric systems have in common that their structure or shape changes when adsorbing at an air/water interface. These structural changes in comparison to their bulk behavior greatly influence the properties of foam films and foams. Regarding the foam stability, formation of adsorbed layers or aggregates plays an important role. The discrepancy between stabilization of macroscopic foams and destabilization of single foam films might be attributed to the blockage of Plateau borders and, therefore, slowed down drainage. Another important parameter is the interfacial viscoelasticity. |
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| Keywords: | Foams Foam films Adsorption at gas/liquid surfaces Polyelectrolyte/surfactant mixtures Proteins Microgels |
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