XPS and contact angle study of cotton surface oxidation by catalytic bleaching

Topalovic, Tatjana; Nierstrasz, Vincent; Bautista, Lorenzo; Jočić, D.; Navarro, Andrés; Warmoeskerken, Marinus

doi:10.1016/j.colsurfa.2006.09.026

Cited by 107 publications

(61 citation statements)

References 28 publications

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“…The low O/C ratio is due to a considerable amount of carbon atoms without oxygen neighbours, which should not be present in pure cellulose. However, it is well known (Topalovic et al 2007;Chung et al 2004;Karahan and Ö zdogan 2008) that laminar layers of waxes, proteins and pectin cover the natural cotton fibres and since these layers mainly consist of unoxidized carbon atoms, one can conclude that waxes, proteins,… are still present on the cellulose fibres, even after NaOH pre-treatment. This result is in agreement with the results of Mitchell et al (2005), who also observed the presence of noncellulosic components on scoured cotton fibres.…”

Section: Xps Resultsmentioning

confidence: 96%

“…Plasma treatment will be performed on cotton woven fabrics using a low pressure glow discharge operated in air in order to improve their hydrophilicity. This improved water wetting is essential for effective processing (dyeing and finishing) and maintenance (cleaning) of cotton assemblies involving aqueous media, because it facilitates the transport of active reagents between and into the fibres (Topalovic et al 2007). An evaluation of the hydrophilic behaviour will be performed using wicking rate experiments.…”

Section: Introductionmentioning

confidence: 98%

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Chemical and physical analysis of cotton fabrics plasma-treated with a low pressure DC glow discharge

Inbakumar¹,

Morent

Geyter

et al. 2009

Cellulose

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This paper focuses on the modification of cotton fabrics using a low pressure DC glow discharge obtained in air. The influence of different operating parameters such as treatment time, discharge power and operating pressure on the chemical and physical properties of the cotton fabrics is studied in detail. Surface analysis and characterization of the plasma-treated cotton fabrics is performed using vertical wicking experiments, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and weight loss measurements. The cotton fabrics show a significant increase in wicking behaviour; an effect which increases with increasing treatment time, increasing discharge power and increasing pressure. Results also show that low pressure DC glow treatment leads to surface erosion of the cellulose fibres, accompanied by an incorporation of oxygen-containing groups (C-O, C=O, O-C-O and O-C=O) on the cotton fibres. The DC glow treatment has thus the potential to influence not only the chemical but also the physical properties of cotton fabrics and this without the use of water or chemicals.

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Section: Xps Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 98%

Chemical and physical analysis of cotton fabrics plasma-treated with a low pressure DC glow discharge

Inbakumar¹,

Morent

Geyter

et al. 2009

Cellulose

View full text Add to dashboard Cite

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“…The analysis of oxygen, carbon and their ratio (O/C) was especially important for chemical composition determination. The O/C ratio for pure cellulose is 0.83 and all lower values indicated the presence of noncellulosic substances on the cotton fiber surface [38]. The O/C ratio for raw cotton yarns 0.168 was slightly increased on M80 and slightly decreased on M20 ( Table 5).…”

Section: Xps and Dyeing Of The Non-cellulosic Propertiesmentioning

confidence: 90%

“…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%

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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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Biomimetic Superoleophobicity of Cotton Fabrics for Efficient Oil–Water Separation

Rana

Chen

Yang

et al. 2016

Adv Materials Inter

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dispersal oil using chemical dispersants, in situ burning, and so on. [4][5][6][7][8] The option for oil collection using filtration was considered as an attractive choice because of its simplicity for the proper disposal of free and dispersed oil in water body.In the last decade, textile materials have gained much attention as membranes or sorbents for oil-water separation due to their high flexibility, moderate absorption capability, low density, reasonable price, and excellent biocompatibility. Typically, two types of membranes, e.g., hydrophilic/oleophobic and hydrophobic/ oleophilic textiles, have been developed and studied for the collection of water or oil from oil-water mixture/emulsion. [4][5][6][7][8] For example, Zhang et al. [6] developed a switchable superoleophilic and superoleophobic material by grafting poly(2-vinylpridine) and oleophilic/hydrophobic polydimethylsiloxane (i.e., P2VP-b-PDMS) on nonwoven textile (cloth-like wipes). The P2VP segment showed an altered wettability and conformation via protonation and deprotonation, and this behavior was further improved by the flexible PDMS block on textile, endowing the material high capability for oil-water separation. Palama et al. demonstrated a switchable wettability of cotton substrate with a coating consisting of zinc oxide nanorods and diamond like carbon. [7] The changeable interfacial behavior (i.e., altered from superoleophilicity to superoleophobicity) was due to the complete wetting of hierarchical surface of cotton by water. In another study, Li et al. [8] prepared a durable robust flower like TiO 2 deposited cotton fabrics with superhydrophobic/oleophilic properties by hydrothermal method. The as prepared member exhibited high flexibility and stability for separating oil-water mixture with excellent separation efficiency. While significant efforts have been made in this field, there were still many issues to be considered and optimized for the materials during the practical cleanup of oil spills, such as chemical and energy cost of membrane, mechanical and thermal stability in air and water conditions, fouling and concentration polarization due to the selective oil adsorption, as well as recyclability and reusability of materials. [8][9][10] Development of sustainable and cost-effective materials by a facile method is highly desirable to satisfy the above requirements.Generally, three distinct interfaces, e.g., air-water-solid, airoil-solid, and water-oil-solid, are considered for describing wettability and interfacial phenomena of water and oil droplets on hydro-philic/phobic or oleo-philic/phobic surfaces, Textile materials have gained much attention as membranes for oil-water separation. However, traditional membranes are suffered by either energyintensive preparation method or the fouling during the practical application. Motivated by the biomimetic surface of fish, this paper reports the modification of cotton fabrics using a single-step hot alkali treatment, which creates roughened morphologies in micro-and nanoscale on fiber surfa...

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XPS and contact angle study of cotton surface oxidation by catalytic bleaching

Cited by 107 publications

References 28 publications

Chemical and physical analysis of cotton fabrics plasma-treated with a low pressure DC glow discharge

Chemical and physical analysis of cotton fabrics plasma-treated with a low pressure DC glow discharge

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

Biomimetic Superoleophobicity of Cotton Fabrics for Efficient Oil–Water Separation

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