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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.
|Journal||Journal of Membrane Science Letters|
|Early online date||2 May 2022|
|Publication status||Published - 31 May 2022|
- cellulose microbeads
- Isoporous membranes
- membrane emulsification
- sustainable microparticles
ASJC Scopus subject areas
- Filtration and Separation
- Physical and Theoretical Chemistry
- Materials Science(all)
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- 1 Finished
Biodegradable Microbeads and Microspheres
Edler, K., Mattia, D. & Scott, J. L.
Engineering and Physical Sciences Research Council
1/09/17 → 30/11/21
Project: Research council
Dataset for "Production of sub-10 micrometre cellulose microbeads using isoporous membranes"
Ekanem, E. (Creator), Mattia, D. (Project Leader), Edler, K. (Project Leader) & Scott, J. L. (Project Leader), University of Bath, 27 Apr 2022