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Creación de cápsulas de líquido sintonizables de baja tensión superficial a través de encapsulación de
Tian-Yu Zhang1, Arnav Banerjee1, Sushanta K Mitra1
1Micro & Nano-scale Transport Laboratory, Waterloo Institute for Nanotechnology, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
Langmuir : the ACS journal of surfaces and colloids
|February 10, 2026
Resumen
Este estudio avanza en el encapsulamiento líquido-líquido impulsado por impacto (LLE) para gotas de baja tensión superficial. Los investigadores lograron una encapsulación confiable de gotas con una tensión superficial tan baja como 16 mN/m, identificando parámetros clave para el control.
Área de la Ciencia:
- Ciencia e Ingeniería de Materiales Ciencia e Ingeniería de Materiales.
- Ingeniería Química Ingeniería Química.
- La dinámica de fluidos es la dinámica de fluidos.
Sus antecedentes:
- La encapsulación de gotas de baja tensión superficial es crucial para los productos farmacéuticos, la ingeniería ambiental y la gestión térmica.
- La encapsulación líquido-líquido impulsada por impacto (LLE) es una técnica prometedora pero poco explorada para la encapsulación de gotas.
- La encapsulación controlada de gotas de baja tensión superficial utilizando LLE impulsado por impacto no se ha investigado fundamentalmente.
Objetivo del estudio:
- Avanzar en la técnica de LLE impulsada por impactos ultrarrápidos para el encapsulado controlado de gotas de baja tensión superficial.
- Investigar experimentalmente los mecanismos y parámetros fundamentales que rigen este proceso de encapsulación.
Principales métodos:
- Demostración experimental de la encapsulación líquido-líquido impulsada por impacto ultrarrápido (LLE).
- Se utilizaron gotas FC-40 (tensión superficial tan baja como 16 mN/m) con diferentes diámetros de impacto (1.791.26 mm).
- Empleó una capa interfacial (capa) de aceite de silicona ultradelgada y analizó los regímenes de encapsulación.
Principales resultados:
- Encapsularon con éxito gotas de baja tensión superficial FC-40 en cuestión de milisegundos.
- Se identificaron tres regímenes de encapsulación: atrapamiento interfacial, penetración con burbujas de aire y penetración sin burbujas de aire.
- Control preciso demostrado sobre la morfología de la cápsula y la distribución del tamaño mediante el ajuste de la energía cinética de impacto y el grosor de la capa interfacial.
Conclusiones:
- El estudio proporciona una comprensión fundamental de LLE impulsado por el impacto para gotas de baja tensión superficial.
- Las capas interfaciales más gruesas promueven cápsulas libres de burbujas de aire.
- Ofrece información valiosa para la producción eficiente y rentable de cápsulas funcionales en diversas aplicaciones.
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