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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
The dynamic water vapour sorption behaviour of natural fibres and kinetic analysis using the parallel exponential kinetics model
Journal of Materials Science, Volume 46, No. 2, Year 2011
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Description
Hygroscopic behaviour is an inherent characteristic of natural fibres which can influence their applications as textile fabrics and composite reinforcements. In this study, the water vapour sorption kinetic properties of cotton, filter paper, flax, hemp, jute, and sisal fibres were determined using a dynamic vapour sorption apparatus and the results were analyzed by use of a parallel exponential kinetics (PEK) model. With all of the fibres tested, the magnitude of the sorption hysteresis observed varied, but it was always greatest at the higher end of the hygroscopic range. Flax and sisal fibres displayed the lowest and highest total hysteresis, respectively. The PEK model, which is comprised of fast and slow sorption components, exhibited hysteresis in terms of mass for both processes between the adsorption and desorption isotherm. The hysteresis derived from the slow sorption process was less than from the fast process for all tested fibres. The fast processes for cotton and filter paper dominated the isotherm process; however, the hemp and sisal fibres displayed a dominant slow process in the isotherm run. The characteristic time for the fast sorption process did not vary between adsorption and desorption, except at the top end of the hygroscopic range. The characteristic time for the slow process was invariably larger for the desorption process. The physical interpretation of the PEK model is discussed. © 2010 Springer Science+Business Media, LLC.
Authors & Co-Authors
Xie, Yanjun
China, Harbin
Northeast Forestry University
Hill, Callum A.S.
United Kingdom, Edinburgh
Edinburgh Napier University
United Kingdom
Jch Industrial Ecology Ltd.
Jalaludin, Zaihan
United Kingdom, Edinburgh
Edinburgh Napier University
Curling, Simon F.
United Kingdom, Bangor
Bangor University
Anandjiwala, Rajesh D.
South Africa, Port Elizabeth
Csir Materials Science and Manufacturing
South Africa, Gqeberha
Nelson Mandela University
Norton, Andrew J.
United Kingdom
Renuables
Newman, Gary
United Kingdom, Bangor
Plant Fibre Technology Ltd.
Statistics
Citations: 117
Authors: 7
Affiliations: 8
Identifiers
Doi:
10.1007/s10853-010-4935-0
ISSN:
00222461
e-ISSN:
15734803
Research Areas
Environmental