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Adsorption of Polar Species at Crude Oil–Water Interfaces: the Chemoelastic Behavior
[Image: see text] We investigate the formation and properties of crude oil/water interfacial films. The time evolution of interfacial tension suggests the presence of short and long timescale processes reflecting the competition between different populations of surface-active molecules. We measure b...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9161445/ https://www.ncbi.nlm.nih.gov/pubmed/35580860 http://dx.doi.org/10.1021/acs.langmuir.2c00058 |
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author | Saad, Ahmed M. Aime, Stefano Chandra Mahavadi, Sharath Song, Yi-Qiao Yutkin, Maxim P. Weitz, David Patzek, Tadeusz W. |
author_facet | Saad, Ahmed M. Aime, Stefano Chandra Mahavadi, Sharath Song, Yi-Qiao Yutkin, Maxim P. Weitz, David Patzek, Tadeusz W. |
author_sort | Saad, Ahmed M. |
collection | PubMed |
description | [Image: see text] We investigate the formation and properties of crude oil/water interfacial films. The time evolution of interfacial tension suggests the presence of short and long timescale processes reflecting the competition between different populations of surface-active molecules. We measure both the time-dependent shear and extensional interfacial rheology moduli. Late-time interface rheology is dominated by elasticity, which results in visible wrinkles on the crude oil drop surface upon interface disturbance. We also find that the chemical composition of the interfacial films is affected by the composition of the aqueous phase that it has contacted. For example, sulfate ions promote films enriched with carboxylic groups and condensed aromatics. Finally, we perform solution exchange experiments and monitor the late-time film composition upon the exchange. We detect the film composition change upon replacing chloride solutions with sulfate-enriched ones. To the best of our knowledge, we are the first to report the composition alteration of aged crude oil films. This finding might foreshadow an essential crude oil recovery mechanism. |
format | Online Article Text |
id | pubmed-9161445 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-91614452022-06-03 Adsorption of Polar Species at Crude Oil–Water Interfaces: the Chemoelastic Behavior Saad, Ahmed M. Aime, Stefano Chandra Mahavadi, Sharath Song, Yi-Qiao Yutkin, Maxim P. Weitz, David Patzek, Tadeusz W. Langmuir [Image: see text] We investigate the formation and properties of crude oil/water interfacial films. The time evolution of interfacial tension suggests the presence of short and long timescale processes reflecting the competition between different populations of surface-active molecules. We measure both the time-dependent shear and extensional interfacial rheology moduli. Late-time interface rheology is dominated by elasticity, which results in visible wrinkles on the crude oil drop surface upon interface disturbance. We also find that the chemical composition of the interfacial films is affected by the composition of the aqueous phase that it has contacted. For example, sulfate ions promote films enriched with carboxylic groups and condensed aromatics. Finally, we perform solution exchange experiments and monitor the late-time film composition upon the exchange. We detect the film composition change upon replacing chloride solutions with sulfate-enriched ones. To the best of our knowledge, we are the first to report the composition alteration of aged crude oil films. This finding might foreshadow an essential crude oil recovery mechanism. American Chemical Society 2022-05-17 2022-05-31 /pmc/articles/PMC9161445/ /pubmed/35580860 http://dx.doi.org/10.1021/acs.langmuir.2c00058 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Saad, Ahmed M. Aime, Stefano Chandra Mahavadi, Sharath Song, Yi-Qiao Yutkin, Maxim P. Weitz, David Patzek, Tadeusz W. Adsorption of Polar Species at Crude Oil–Water Interfaces: the Chemoelastic Behavior |
title | Adsorption of Polar Species at Crude Oil–Water
Interfaces: the Chemoelastic Behavior |
title_full | Adsorption of Polar Species at Crude Oil–Water
Interfaces: the Chemoelastic Behavior |
title_fullStr | Adsorption of Polar Species at Crude Oil–Water
Interfaces: the Chemoelastic Behavior |
title_full_unstemmed | Adsorption of Polar Species at Crude Oil–Water
Interfaces: the Chemoelastic Behavior |
title_short | Adsorption of Polar Species at Crude Oil–Water
Interfaces: the Chemoelastic Behavior |
title_sort | adsorption of polar species at crude oil–water
interfaces: the chemoelastic behavior |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9161445/ https://www.ncbi.nlm.nih.gov/pubmed/35580860 http://dx.doi.org/10.1021/acs.langmuir.2c00058 |
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