Eventos Anais de eventos
ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
PRODUCTION OF MICROCAPSULES FOR CONTROLLED FLOW BEHAVIOR IN CONFINED CHANNELS
Submission Author:
Bruna Leopercio , RJ
Co-Authors:
Bruna Leopercio, Mariano Michelon , Marcio CARVALHO
Presenter: Bruna Leopercio
doi://10.26678/ABCM.ENCIT2020.CIT20-0217
Abstract
The flow of soft particles and microcapsules suspensions through confined spaces is important in many fields, including enhanced oil recovery, reactor feeding, red-blood-cell transport and drug delivery. Biopolymer-based microcapsules are highly hierarchized structures containing an inner phase and a hydrogel shell. In this study, we use a microfluidic device, which combines co-flow and flow-focusing in coaxial glass-capillaries, to produce oil-in-water-in-oil double emulsion templates of gellan microcapsules. Adjusting the fluids flow rates enables the production of microcapsules with a specific diameter and tunable mechanical properties. The effect of these properties on the flow resistance through confined channels is studied by measuring the extra pressure drop associated with the flow of a single microcapsule through a constriction. This research shows how microcapsules can be designed and produced to achieve the desired suspension flow behavior in porous media.
Keywords
flow mobility, targeted delivery, confined geometry, constriction, pressure drop
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