Mechanistic study of nanoparticles-surfactant foam flow in etched glass micro-models.
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| Title: | Mechanistic study of nanoparticles-surfactant foam flow in etched glass micro-models. |
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| Authors: | Yekeen, Nurudeen1 peteryekeen@yahoo.com, Manan, Muhammad A.1, Idris, Ahmad Kamal2, Samin, Ali Mohamed1, Risal, Abdul Rahim1 |
| Source: | Journal of Dispersion Science & Technology. 2018, Vol. 39 Issue 5, p623-633. 11p. 7 Color Photographs, 11 Diagrams, 2 Charts. |
| Subjects: | Glass etching, Nanoparticles, Surface active agents, Viscoelasticity, Coalescence (Chemistry) |
| Abstract: | This study was conducted in order to identify the pore-level mechanisms controlling the nanoparticles-surfactant foams flow process and residual oil mobilization in etched glass micro-models. The dominant mechanism of foam propagation and residual oil mobilization in water-wet system was identified as lamellae division and emulsification of oil, respectively. There was inter-bubble trapping of oil and water, lamellae detaching and collapsing of SDS-foam in the presence of oil in water-wet system and in oil-wet system. The dominant mechanisms of nanoparticles-surfactant foam flow and residual oil mobilization in oil-wet system were the generation of pore spanning continuous gas foam. The identified mechanisms were independent of pore geometry. The SiO2-SDS and Al2O3-SDS foams propagate successfully in water-wet and oil-wet systems; foam coalescence was prevented during film stretching due to the adsorption and accumulation of the nanoparticles at the gas-liquid interface of the foam, which increased the films’ interfacial viscoelasticity. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | This study was conducted in order to identify the pore-level mechanisms controlling the nanoparticles-surfactant foams flow process and residual oil mobilization in etched glass micro-models. The dominant mechanism of foam propagation and residual oil mobilization in water-wet system was identified as lamellae division and emulsification of oil, respectively. There was inter-bubble trapping of oil and water, lamellae detaching and collapsing of SDS-foam in the presence of oil in water-wet system and in oil-wet system. The dominant mechanisms of nanoparticles-surfactant foam flow and residual oil mobilization in oil-wet system were the generation of pore spanning continuous gas foam. The identified mechanisms were independent of pore geometry. The SiO2-SDS and Al2O3-SDS foams propagate successfully in water-wet and oil-wet systems; foam coalescence was prevented during film stretching due to the adsorption and accumulation of the nanoparticles at the gas-liquid interface of the foam, which increased the films’ interfacial viscoelasticity. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 01932691 |
| DOI: | 10.1080/01932691.2017.1378581 |
