Turbulence-induced formation of emulsion gels

Emulsion gels have a wide range of applications. We report on a facile and versatile method to produce stable emulsion gels with tunable rheological properties. Gel formation is triggered by subjecting a mixture containing aqueous colloidal particle (CP) suspensions and water-immiscible liquids to i...

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Autores principales:	Wu Li, Gregory J.O. Martin, Muthupandian Ashokkumar
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Emulsion Gels Turbulent Flow Colloidal Particles Ultrasound Chemistry QD1-999 Acoustics. Sound QC221-246
Acceso en línea:	https://doaj.org/article/e1334a45fc574d769b25828cf6c9e2f6
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id	oai:doaj.org-article:e1334a45fc574d769b25828cf6c9e2f6
record_format	dspace
spelling	oai:doaj.org-article:e1334a45fc574d769b25828cf6c9e2f62021-12-02T04:59:57ZTurbulence-induced formation of emulsion gels1350-417710.1016/j.ultsonch.2021.105847https://doaj.org/article/e1334a45fc574d769b25828cf6c9e2f62021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1350417721003898https://doaj.org/toc/1350-4177Emulsion gels have a wide range of applications. We report on a facile and versatile method to produce stable emulsion gels with tunable rheological properties. Gel formation is triggered by subjecting a mixture containing aqueous colloidal particle (CP) suspensions and water-immiscible liquids to intense turbulence, generated by low frequency (20 kHz) ultrasound or high-pressure homogenization. Through systematic investigations, requisite gel formation criteria are established with respect to both formulation and processing, including ratio/type of liquid pairs, CP properties, and turbulence conditions. Based on the emulsion microstructure and rheological properties, inter-droplet bridging and CP void-filling are proposed as universal stabilization mechanisms. These mechanisms are further linked to droplet-size scaling and sphere close-packing theory, distinctive from existing gel-conferring models. The study thereby provides the foundation for advancing the production of emulsion gels that can be tailored to a wide range of current and emerging applications in the formulation and processing of food, cosmetics or pharmaceutical gels, and in material science.Wu LiGregory J.O. MartinMuthupandian AshokkumarElsevierarticleEmulsion GelsTurbulent FlowColloidal ParticlesUltrasoundChemistryQD1-999Acoustics. SoundQC221-246ENUltrasonics Sonochemistry, Vol 81, Iss , Pp 105847- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Emulsion Gels Turbulent Flow Colloidal Particles Ultrasound Chemistry QD1-999 Acoustics. Sound QC221-246
spellingShingle	Emulsion Gels Turbulent Flow Colloidal Particles Ultrasound Chemistry QD1-999 Acoustics. Sound QC221-246 Wu Li Gregory J.O. Martin Muthupandian Ashokkumar Turbulence-induced formation of emulsion gels
description	Emulsion gels have a wide range of applications. We report on a facile and versatile method to produce stable emulsion gels with tunable rheological properties. Gel formation is triggered by subjecting a mixture containing aqueous colloidal particle (CP) suspensions and water-immiscible liquids to intense turbulence, generated by low frequency (20 kHz) ultrasound or high-pressure homogenization. Through systematic investigations, requisite gel formation criteria are established with respect to both formulation and processing, including ratio/type of liquid pairs, CP properties, and turbulence conditions. Based on the emulsion microstructure and rheological properties, inter-droplet bridging and CP void-filling are proposed as universal stabilization mechanisms. These mechanisms are further linked to droplet-size scaling and sphere close-packing theory, distinctive from existing gel-conferring models. The study thereby provides the foundation for advancing the production of emulsion gels that can be tailored to a wide range of current and emerging applications in the formulation and processing of food, cosmetics or pharmaceutical gels, and in material science.
format	article
author	Wu Li Gregory J.O. Martin Muthupandian Ashokkumar
author_facet	Wu Li Gregory J.O. Martin Muthupandian Ashokkumar
author_sort	Wu Li
title	Turbulence-induced formation of emulsion gels
title_short	Turbulence-induced formation of emulsion gels
title_full	Turbulence-induced formation of emulsion gels
title_fullStr	Turbulence-induced formation of emulsion gels
title_full_unstemmed	Turbulence-induced formation of emulsion gels
title_sort	turbulence-induced formation of emulsion gels
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/e1334a45fc574d769b25828cf6c9e2f6
work_keys_str_mv	AT wuli turbulenceinducedformationofemulsiongels AT gregoryjomartin turbulenceinducedformationofemulsiongels AT muthupandianashokkumar turbulenceinducedformationofemulsiongels
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Turbulence-induced formation of emulsion gels

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