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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5727

Title: Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography
Authors: Cordeiro, N
Gouveia, C
Jacob John, M
Keywords: Natural fibres
Fibres modification
Alkaline treatment
Zein treatment
Inverse gas chromatography
Surface properties
Issue Date: Jan-2011
Publisher: Elsevier
Citation: Cordeiro, N, Gouveia, C and Jacob John, M. 2011. Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography. Industrial Crops and Products, vol. 33(1), pp 108-115
Series/Report no.: Workflow;7898
Abstract: Inverse gas chromatography (IGC) is a suitable method to determine surface energy of natural fibres when compared to wetting techniques. In the present study, the surface properties of raw and modified lignocellulosic fibres have been investigated by IGC. The fibres chosen for the study were flax, hemp, kenaf, agave, agave hybrid, sisal and pineapple. The treatments used were 4% NaOH and 2% zein. The uniqueness of zein treatment is that it is bio-based and therefore maintains the biodegradable character of the natural fibres. Fourier transform infrared spectroscopy (FTIR) and environmental scanning electron microscope (ESEM) were also performed to characterize the surface changes in fibres. The surface properties of fibres are influenced by the chemical composition, crystallinity and morphology of the fibres. Bast fibres exhibited higher surface dispersive energy than leaf fibres. The raw fibres have a predominant basic character, whereas the alkaline treatment makes the fibres more acidic. Both alkaline and zein treatments decrease the dispersive surface energy and the specific free energy of adsorption.
Description: Copyright: 2011 Elsevier. This is the accepted version of the work. The definitive version is published in Industrial Crops and Products, vol. 33(1), pp 108-115
URI: http://www.sciencedirect.com/science/article/pii/S0926669010002189
http://hdl.handle.net/10204/5727
ISSN: 0926-6690
Appears in Collections:Polymers and composites
General science, engineering & technology

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