Preparation and characterization of tunable oil-encapsulated alginate microfibers

Journal article


Chaurasia, AS, Jahanzad, F and Sajjadi, S (2017). Preparation and characterization of tunable oil-encapsulated alginate microfibers. Materials and Design. 128, pp. 64-70.
AuthorsChaurasia, AS, Jahanzad, F and Sajjadi, S
Abstract

© 2017 Elsevier LtdA single-step microfluidic approach was developed which allowed a wide range of oil-loaded calcium-alginate microfibers to be fabricated at the same compositions but with different morphologies. A framework for characterization of wavy fibers was developed which linked the fiber morphology and tensile strength to the encapsulation type and geometry. The geometry of oil encapsulates as well as the fibers surface morphology were conveniently tuned via the gelation reaction dynamics and phase flow rates. A 2D mathematical reconstruction of the fiber's surface revealed that fibers having spherical and ellipsoid encapsulates enjoyed the highest surface roughness. Tubular fibers endured the highest tensile force before failure, compared to fibers with other encapsulate geometries at a fixed alginate phase ratio (ϕalg). Fibers with increased ϕalg withstood a higher tensile force. However, the strength of fibers reduced if the increase in ϕalg altered the encapsulate geometry from tubular to discrete oil segments. Tubular fibers also underwent maximum elastic and plastic deformation prior to failure, among all fibers.

Keywords0912 Materials Engineering; 0913 Mechanical Engineering; Materials
Year2017
JournalMaterials and Design
Journal citation128, pp. 64-70
PublisherElsevier
ISSN0264-1275
Digital Object Identifier (DOI)doi:10.1016/j.matdes.2017.04.069
Publication dates
Print20 Apr 2017
Publication process dates
Deposited15 Aug 2017
Accepted19 Apr 2017
Accepted author manuscript
License
CC BY-NC-ND 4.0
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https://openresearch.lsbu.ac.uk/item/86zq2

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