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Updated: Feb 12, 2026
06:31
Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
Published on: March 18, 2020
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Descomposición y recuperación asistida por cizallamiento y surfactante de una interfaz aceite-agua estabilizada por
Malek El-Aooiti1, Dérick Rousseau1
1Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario M5B 2K3, Canada.
Langmuir : the ACS journal of surfaces and colloids
|February 11, 2026
Resumen
Este estudio muestra que las emulsiones estabilizadas por partículas pueden recuperar su estructura después del corte. Sin embargo, los tensioactivos que rompen la estructura debilitan permanentemente la película interfacial, lo que afecta la estabilidad de la emulsión y las propiedades de descomposición.
Área de la Ciencia:
- Ciencias coloidales y de la superficie.
- Ciencia de los materiales Ciencia de los materiales.
- Reología Reología.
Sus antecedentes:
- Las emulsiones estabilizadas por partículas son vitales en las industrias alimentaria y petroquímica.
- La estabilidad de estas emulsiones depende en gran medida de la capa de partículas en la interfaz.
- La comprensión de la reología interfacial es clave para controlar la descomposición de la emulsión.
Objetivo del estudio:
- Para investigar la descomposición reológica y la recuperación de películas de partículas bajo corte.
- Para determinar el impacto de los tensioactivos que rompen la estructura en las propiedades de la interfaz.
- Para correlacionar los cambios interfaciales con la estabilidad de la emulsión.
Principales métodos:
- Experimentos en películas interfaciales planas de aceite y agua utilizando cristales de monostearato de glicerol (GMS).
- Aplicación de diferentes condiciones de cizallamiento para evaluar la respuesta de la película.
- Adición de surfactante sorbitano monooleato (SMO) para evaluar sus efectos.
Principales resultados:
- Las películas interfaciales mostraron transiciones reversibles entre estados elásticos y viscosos basados en la tensión.
- El monooleato de sorbitano (SMO) redujo permanentemente el módulo elástico interfacial (G) y la tensión.
- El corte de las películas debilitadas dio lugar a una pérdida irreversible de las propiedades viscoelásticas.
Conclusiones:
- Las interfaces estabilizadas por partículas pueden recuperar G' después del corte, pero los tensioactivos pueden causar cambios irreversibles.
- Los tensioactivos que rompen la estructura desestabilizan las emulsiones al alterar la viscoelasticidad interfacial.
- Los hallazgos ayudan en el diseño de emulsiones con características de descomposición ajustables.
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