Layer Thickness of Cork Accessible to Extraction
Y.J. Alves Manrique, P. Rodrigues Pinto, M.V. Oliveira. J.M. Loureiro
The aim of this work is to evaluate the layer thickness of cork accessible to extraction for different solvents. Samples of granulated industrial cork (up to 6 mm) from milling punched cork planks were extracted with solvents of different polarities. The best yield was ca. 96 gextract/kgCork, obtained for the more polar solvent tested, for the smallest particle size; it was assumed that these particles were completely extracted. For particles bigger than 1 mm, the extracted layer is nearly constant for each solvent; for hexane, this extracted layer is around half that of the extracted with the other two solvents, regardless of particle size. The dimensionless thickness, on average, is ca. 0.22, 0.20 and 0.11 for acetone, dichloromethane and hexane, respectively.
Keywords
Granulated Cork, Powder Cork, Soxhlet, Extraction
Published online 9/22/2017, 8 pages
Copyright © 2017 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Y.J. Alves Manrique, P. Rodrigues Pinto, M.V. Oliveira. J.M. Loureiro, ‘Layer Thickness of Cork Accessible to Extraction’, Materials Research Proceedings, Vol. 3, pp 32-39, 2017
DOI: http://dx.doi.org/10.21741/9781945291418-5
The article was published as article 5 of the book Cork Science and its Applications
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