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Production of sub-10 micrometre cellulose microbeads using isoporous membranes

Ekanem, Ekanem E. ; Sabirova, Ainur ; Callaghan, Ciarán ; Scott, Janet L. ; Edler, Karen J. LU orcid ; Nunes, Suzana P. and Mattia, Davide (2022) In Journal of Membrane Science Letters 2(1).
Abstract

The production of sub-10 µm cellulose microbeads via membrane emulsification using isoporous membranes is reported here for the first time. Poly(ethylene terephthalate) membranes, with defined interpore distances, pore diameters and straight-through pores were fabricated via photolithography. A dispersed phase of 8 wt% cellulose solution was extruded through the membrane pores, forming, due to shear provided by an overhead stirrer, cellulose solution droplets dispersed in a continuous phase composed of 2 wt% and 5 wt% Span in sunflower oil. Upon phase inversion with ethanol, sub-10 µm microbeads with a coefficient of variation (CV) < 45 % were produced by exploring the Weber number (Wed) - Capillary number (Cac)... (More)

The production of sub-10 µm cellulose microbeads via membrane emulsification using isoporous membranes is reported here for the first time. Poly(ethylene terephthalate) membranes, with defined interpore distances, pore diameters and straight-through pores were fabricated via photolithography. A dispersed phase of 8 wt% cellulose solution was extruded through the membrane pores, forming, due to shear provided by an overhead stirrer, cellulose solution droplets dispersed in a continuous phase composed of 2 wt% and 5 wt% Span in sunflower oil. Upon phase inversion with ethanol, sub-10 µm microbeads with a coefficient of variation (CV) < 45 % were produced by exploring the Weber number (Wed) - Capillary number (Cac) emulsion generation space. These results show that sub-10 µm cellulose microbeads can be produced using isoporous polymer membranes fabricated via photolithography, for use in a wide range of applications in the personal care, food and drug industries.

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author
; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
keywords
cellulose microbeads, Isoporous membranes, membrane emulsification, photolithography, sustainable microparticles
in
Journal of Membrane Science Letters
volume
2
issue
1
article number
100024
publisher
Elsevier
external identifiers
  • scopus:85133722497
ISSN
2772-4212
DOI
10.1016/j.memlet.2022.100024
language
English
LU publication?
no
additional info
Publisher Copyright: © 2022
id
26afad2b-7656-4e3b-9a44-220d0106ce61
date added to LUP
2023-01-18 08:58:52
date last changed
2023-02-02 14:27:41
@article{26afad2b-7656-4e3b-9a44-220d0106ce61,
  abstract     = {{<p>The production of sub-10 µm cellulose microbeads via membrane emulsification using isoporous membranes is reported here for the first time. Poly(ethylene terephthalate) membranes, with defined interpore distances, pore diameters and straight-through pores were fabricated via photolithography. A dispersed phase of 8 wt% cellulose solution was extruded through the membrane pores, forming, due to shear provided by an overhead stirrer, cellulose solution droplets dispersed in a continuous phase composed of 2 wt% and 5 wt% Span in sunflower oil. Upon phase inversion with ethanol, sub-10 µm microbeads with a coefficient of variation (CV) &lt; 45 % were produced by exploring the Weber number (We<sub>d</sub>) - Capillary number (Ca<sub>c</sub>) emulsion generation space. These results show that sub-10 µm cellulose microbeads can be produced using isoporous polymer membranes fabricated via photolithography, for use in a wide range of applications in the personal care, food and drug industries.</p>}},
  author       = {{Ekanem, Ekanem E. and Sabirova, Ainur and Callaghan, Ciarán and Scott, Janet L. and Edler, Karen J. and Nunes, Suzana P. and Mattia, Davide}},
  issn         = {{2772-4212}},
  keywords     = {{cellulose microbeads; Isoporous membranes; membrane emulsification; photolithography; sustainable microparticles}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Membrane Science Letters}},
  title        = {{Production of sub-10 micrometre cellulose microbeads using isoporous membranes}},
  url          = {{http://dx.doi.org/10.1016/j.memlet.2022.100024}},
  doi          = {{10.1016/j.memlet.2022.100024}},
  volume       = {{2}},
  year         = {{2022}},
}