Cordeiro, NGouveia, CJohn, Maya J2012-04-112012-04-112011-01Cordeiro, 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 108-1150926-6690http://www.sciencedirect.com/science/article/pii/S0926669010002189http://hdl.handle.net/10204/5727Copyright: 2011 Elsevier. This is the accepted version of the work. The definitive version is published in Industrial Crops and Products, vol. 33(1), pp 108-115Inverse 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.enNatural fibresFibres modificationAlkaline treatmentZein treatmentInverse gas chromatographySurface propertiesArticleCordeiro, N., Gouveia, C., & Jacob John, M. (2011). Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography. http://hdl.handle.net/10204/5727Cordeiro, N, C Gouveia, and Maya Jacob John "Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography." (2011) http://hdl.handle.net/10204/5727Cordeiro N, Gouveia C, Jacob John M. Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography. 2011; http://hdl.handle.net/10204/5727.TY - Article AU - Cordeiro, N AU - Gouveia, C AU - Jacob John, Maya AB - 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. DA - 2011-01 DB - ResearchSpace DP - CSIR KW - Natural fibres KW - Fibres modification KW - Alkaline treatment KW - Zein treatment KW - Inverse gas chromatography KW - Surface properties LK - https://researchspace.csir.co.za PY - 2011 SM - 0926-6690 T1 - Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography TI - Investigation of surface properties of physico-chemically modified natural fibres using inverse gas chromatography UR - http://hdl.handle.net/10204/5727 ER -