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Continuous Manufacturing of Microfluidic Fibers Embedded with Ordered Microparticles via Ionic Gelation

ANTONIO MAISTO, Daniel McDowall, Dave J. Adams Orcid Logo, Francesco Del Giudice Orcid Logo

ACS Applied Engineering Materials, Volume: 1, Issue: 1

Swansea University Authors: ANTONIO MAISTO, Francesco Del Giudice Orcid Logo

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Abstract

Fibers loaded with either particles or cells are widely employed across a variety of fields, including material science, tissue engineering, and pharmaceutical research. However, the concentration of such objects along the fiber length remains stochastic, thus resulting in fibers having heterogeneou...

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Published in: ACS Applied Engineering Materials
ISSN: 2771-9545
Published: American Chemical Society (ACS) 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa61178
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Abstract: Fibers loaded with either particles or cells are widely employed across a variety of fields, including material science, tissue engineering, and pharmaceutical research. However, the concentration of such objects along the fiber length remains stochastic, thus resulting in fibers having heterogeneous properties along their length. We here introduce a new class of material featuring fibers loaded with “equally spaced” microparticles. The fibers were obtained thanks to the combination between the recently discovered viscoelastic particle ordering phenomenon and the well-established process of fiber synthesis via ex situ ionic gelation. We employed a simple experimental apparatus made of a syringe pump connected to a 100 μm tube ending in a calcium chloride bath. The liquid forming the fiber was an aqueous solution of hyaluronic acid and sodium alginate. We studied the effect of volumetric flow rate, sodium alginate concentration, and spinning speed on the fiber diameter and the particle-spacing in the fiber. We also discussed the advantages of this type of fiber over the existing ones and suggested potential applications across several fields.
Keywords: particle ordering, viscoelasticity, biomaterials, fibers, non-Newtonian fluids, gelation
College: Faculty of Science and Engineering
Funders: EPSRC: EP/S036490/1; Leverhulme Trust: RPG-2018-013
Issue: 1