Surface chemical analysis of raw cotton fibres and associated materials

Mitchell, R.; Carr, Chris; Parfitt, M.; Vickerman, J. C.; Jones, C. C.

doi:10.1007/s10570-005-9000-9

Cited by 121 publications

(87 citation statements)

References 6 publications

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“…The results are in agreement with earlier studies of cellulosic materials (Soignet et al 1976;Ahmed et al 1987;Gellerstedt and Gatenholm 1999;Johansson et al 2004;Fras et al 2005;Mitchell et al 2005) and the well known fact that laminar layers of waxes, proteins and pectin, which originally more or less totally conceal the cellulose backbone, cover natural cotton fibers. It was shown by (Buchert et al 2001) that total removal of these ''natural passivation layers'' is very difficult indeed.…”

Section: Surface Chemical Effectssupporting

confidence: 92%

“…It was shown by (Buchert et al 2001) that total removal of these ''natural passivation layers'' is very difficult indeed. A minimum surface concentration of non-cellulosic compounds is 10-20% even in ''pure'' cellulose materials (Ahmed et al 1987;Belgacem et al 1995;Buchert et al 2001;Mitchell et al 2005) attributed to non-removable impurities. Since the waxes consist mainly of C1 type carbon, calculated relative amount of C1 component can be taken as an indicator of their presence at the fiber surface.…”

Section: Surface Chemical Effectsmentioning

confidence: 99%

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Analysis of the effects of catalytic bleaching on cotton

et al. 2007

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Hydrogen peroxide can be catalyzed to bleach cotton fibers at temperatures as low as 308C by incorporating dinuclear tri-l-oxo bridged manganese(IV) complex of the ligand 1,4,7-trimethyl-1,4,7-triazacyclononane (MnTACN) as the catalyst in the bleaching solution. The catalytic system was found to be more selective under the conditions applied than the non-catalytic H 2 O 2 system, showing better bleaching performance while causing slightly lower decrease in degree of polymerization (DP) of cellulose. In order to gain fundamental knowledge of the bleach effect on cotton fibers and cellulose as its main component, especially after catalytic bleaching, X-ray Photoelectron Spectroscopy (XPS) was used to study surface chemical effects. The Washburn method was applied to investigate wetting properties, and liquid porosity was used to obtain pore volume distribution (PVD) plots. Parallel analyzes performed on model cotton fabric, i.e. ''clean'' cotton fabric stained with morin -a pigment regularly found in native cotton fiber, helped to differentiate between pigment oxidation and other bleaching effects produced on the (regular) industrially scoured cotton fabric. Bleaching was not limited to the chemical action but also affected cotton fiber capillary parameters most likely due to the removal of non-cellulosic materials as well as chain-shortened cellulose.

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Section: Surface Chemical Effectssupporting

confidence: 92%

Section: Surface Chemical Effectsmentioning

confidence: 99%

Analysis of the effects of catalytic bleaching on cotton

et al. 2007

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“…XPS and staining of different components of non-cellulosic substances of fibers with appropriate dyes are the methods for determination, the composition and the structure of the cuticle [12,32,33,[38][39][40][41].…”

Section: Xps and Dyeing Of The Non-cellulosic Propertiesmentioning

confidence: 99%

“…A detailed analysis of the oxygen (O1s) peak is generally less useful. The chemical shifts of carbon (C1s) in cotton fibers are deconvoluted into four sub-peaks classified into four categories [38,40]: C1, (unoxidised carbon C-C characteristic for waxes), C2 (carbon with one oxygen bond C-O), C3 (carbon with two oxygen bonds C-O-C or C=O, both characteristic for cellulose), and C4 (carbon with three oxygen bonds O=C-O, characteristic for pectin).…”

Section: Xps and Dyeing Of The Non-cellulosic Propertiesmentioning

confidence: 99%

Characterization on Surface of Mercerized and Enzymatic Scoured Cotton after Different Temperature of Drying

Jordanov¹,

Mangovska²

2009

TOTEXTILEJ

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Abstract:The influence of different temperature of drying after mercerizing on enzymatic scouring through changes in the surface properties and scouring efficiency were investigated. Mercerized cotton yarns dried at room temperature (20 o C) and 80 o C were scoured with alkaline and acid pectinases. Alkaline scouring was also done for comparing. Surface properties and scouring efficiency were followed through the CIE whiteness degree, CIELAB coordinates, X-ray photoelectron spectroscopy, staining the non-cellulosic components with appropriate dyes, wettability and surface fee energy. Mercerization changes the cotton surface, and removes part of the cuticle components. Drying at 80 o C melted down the residual waxes covering the surface of the fiber, enhancing the alkaline and alkaline pectinase scouring and enabling acid pectinase scouring. While way of scouring has significant influence on the most measured properties, temperature of drying has significant influence on CIE whiteness, CIELAB coordinates a*, b*, L* BB and on x-ray photoelectron spectroscopy value O/C.

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“…Techniques that reduce the hydrophilicity of fiber materials include chemical modification (Mitchell et al 2005;Dankovich and Hsieh 2007;Devi and Maji 2012), compositing with hydrophobic polymers (Yang et al 2012), inorganic fillers (Chen et al 2010), and plasma treatment (Poaty et al 2013). However, chemical modification usually consumes a lot of energy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Chlorinated Paraffin Nanoemulsion on the Microstructure and Water Repellency of Ultra-Low Density Fiberboard

Cai

Niu

et al. 2016

BioResources

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This work describes a water repellent ultra-low density fiberboard (ULDF) prepared by chlorinated paraffin nanoemulsion (CPNE). Compared with the untreated ULDF, the contact angle of ULDF treated with 150 mL of CPNE increased from 40° to 134°, while its apparent surface free energy decreased from 24.19 mN/m to 10.06 mN/m. Moreover, the water absorbance of ULDF treated with CPNE decreased from 88.2% to 24% in the first hour. The improved hydrophobicity and hygroscopicity of ULDF was supported by the presence of a film on the surface of fibers, as observed by environmental scanning electron microscopy. The occurrence of chlorine and the chemical structure changes in ULDF before and after CPNE treatment were also confirmed by X-ray photoelectron spectroscopy analysis and Fourier transform infrared spectroscopy respectively. This ULDF with enhanced water repellency is a promising insulation material.

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Surface chemical analysis of raw cotton fibres and associated materials

Cited by 121 publications

References 6 publications

Analysis of the effects of catalytic bleaching on cotton

Analysis of the effects of catalytic bleaching on cotton

Characterization on Surface of Mercerized and Enzymatic Scoured Cotton after Different Temperature of Drying

Effect of Chlorinated Paraffin Nanoemulsion on the Microstructure and Water Repellency of Ultra-Low Density Fiberboard

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