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.
Aluminum-antimony (Al-Sb) seems to be a promising semiconducting material for high-temperature application especially for transistors and P-N junction diodes and is a highly coefficient solar material. No attempt has been made to study the bilayer diffusion properties of Al-Sb thin film by plasma exposure. In this paper, the characterization of plasma-exposed Al-Sb bilayer thin films is presented. Thin films were coated by thermal vapor coating technique, and after coating, the sample was annealed and exposed with plasma. Results were obtained from optical band gap data and X-ray diffraction for treated and untreated Al-Sb thin films, and these results were compared with annealed Al-Sb thin films.
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