Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration
The ability of solid particles to stabilise emulsions is a well known phenomenon which has recently been demonstrated for the stabilisation of gas bubbles. In this paper, a new theoretical model is developed which describes how an adsorbed layer of solid nanoparticles modifies the interfacial tensio...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2012
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| _version_ | 1797055897285951488 |
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| author | Azmin, M Mohamedi, G Edirisinghe, M Stride, E |
| author_facet | Azmin, M Mohamedi, G Edirisinghe, M Stride, E |
| author_sort | Azmin, M |
| collection | OXFORD |
| description | The ability of solid particles to stabilise emulsions is a well known phenomenon which has recently been demonstrated for the stabilisation of gas bubbles. In this paper, a new theoretical model is developed which describes how an adsorbed layer of solid nanoparticles modifies the interfacial tension and diffusivity of a gas bubble in a liquid and hence its stability. In agreement with experimental observations on microbubbles coated with 15 nm diameter spherical gold particles, the results of simulations with the model indicate that the particles substantially decrease the rate at which bubble dissolution occurs and enables them to maintain a stable radius once a critical particle concentration has been reached. © 2012 Elsevier B.V. |
| first_indexed | 2024-03-06T19:15:50Z |
| format | Journal article |
| id | oxford-uuid:18538a48-d080-490b-a78e-85c518a9aabf |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:15:50Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:18538a48-d080-490b-a78e-85c518a9aabf2022-03-26T10:42:39ZDissolution of coated microbubbles: The effect of nanoparticles and surfactant concentrationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:18538a48-d080-490b-a78e-85c518a9aabfEnglishSymplectic Elements at Oxford2012Azmin, MMohamedi, GEdirisinghe, MStride, EThe ability of solid particles to stabilise emulsions is a well known phenomenon which has recently been demonstrated for the stabilisation of gas bubbles. In this paper, a new theoretical model is developed which describes how an adsorbed layer of solid nanoparticles modifies the interfacial tension and diffusivity of a gas bubble in a liquid and hence its stability. In agreement with experimental observations on microbubbles coated with 15 nm diameter spherical gold particles, the results of simulations with the model indicate that the particles substantially decrease the rate at which bubble dissolution occurs and enables them to maintain a stable radius once a critical particle concentration has been reached. © 2012 Elsevier B.V. |
| spellingShingle | Azmin, M Mohamedi, G Edirisinghe, M Stride, E Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration |
| title | Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration |
| title_full | Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration |
| title_fullStr | Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration |
| title_full_unstemmed | Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration |
| title_short | Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration |
| title_sort | dissolution of coated microbubbles the effect of nanoparticles and surfactant concentration |
| work_keys_str_mv | AT azminm dissolutionofcoatedmicrobubblestheeffectofnanoparticlesandsurfactantconcentration AT mohamedig dissolutionofcoatedmicrobubblestheeffectofnanoparticlesandsurfactantconcentration AT edirisinghem dissolutionofcoatedmicrobubblestheeffectofnanoparticlesandsurfactantconcentration AT stridee dissolutionofcoatedmicrobubblestheeffectofnanoparticlesandsurfactantconcentration |