Manufacturing of nanoemulsions using nanoporous anodized alumina membranes

Experimental investigation and process modeling

Kah P. Lee, Davide Mattia

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Tubular anodic alumina membranes, containing self-ordered and circular pores below 100 nm, were used to produce sunflower oil in water emulsions. Span 80 and Tween 20 were used as surfactants in the dispersed phase and continuous phase, respectively. Both dead-end and cross-flow processes were investigated. Membrane pore diameter and cross-flow velocity dominated the final droplet size. The droplet size yielded was consistently in the nanometer range and exhibited low polydispersity (<0.2). In particular, the smallest average droplet size range of approximately 120 nm was obtained when a 25 nm membrane was used in a cross-flow configuration. Models developed for micrometer-sized emulsions produced an overestimation of the nanoemulsion droplets in this work of up to 180 times. A modified version of the model developed by Peng and Williams is proposed here with good agreement for nanometer-sized emulsion droplets.
Original languageEnglish
Pages (from-to)14866-14874
Number of pages9
JournalIndustrial & Engineering Chemistry Research
Volume52
Issue number42
Early online date23 Sep 2013
DOIs
Publication statusPublished - 2013

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Aluminum Oxide
Alumina
Membranes
Emulsions
Sunflower oil
Polysorbates
Polydispersity
Surface-Active Agents
Flow velocity
Surface active agents
Water

Cite this

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abstract = "Tubular anodic alumina membranes, containing self-ordered and circular pores below 100 nm, were used to produce sunflower oil in water emulsions. Span 80 and Tween 20 were used as surfactants in the dispersed phase and continuous phase, respectively. Both dead-end and cross-flow processes were investigated. Membrane pore diameter and cross-flow velocity dominated the final droplet size. The droplet size yielded was consistently in the nanometer range and exhibited low polydispersity (<0.2). In particular, the smallest average droplet size range of approximately 120 nm was obtained when a 25 nm membrane was used in a cross-flow configuration. Models developed for micrometer-sized emulsions produced an overestimation of the nanoemulsion droplets in this work of up to 180 times. A modified version of the model developed by Peng and Williams is proposed here with good agreement for nanometer-sized emulsion droplets.",
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AU - Mattia, Davide

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AB - Tubular anodic alumina membranes, containing self-ordered and circular pores below 100 nm, were used to produce sunflower oil in water emulsions. Span 80 and Tween 20 were used as surfactants in the dispersed phase and continuous phase, respectively. Both dead-end and cross-flow processes were investigated. Membrane pore diameter and cross-flow velocity dominated the final droplet size. The droplet size yielded was consistently in the nanometer range and exhibited low polydispersity (<0.2). In particular, the smallest average droplet size range of approximately 120 nm was obtained when a 25 nm membrane was used in a cross-flow configuration. Models developed for micrometer-sized emulsions produced an overestimation of the nanoemulsion droplets in this work of up to 180 times. A modified version of the model developed by Peng and Williams is proposed here with good agreement for nanometer-sized emulsion droplets.

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