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Kale M.J.,The Bombay Textile Research Association | Bhat N.V.,The Bombay Textile Research Association
Coloration Technology | Year: 2011

Polyester fabric (filament by filament) was pretreated in a microwave oven in the presence of solvents and subsequently dyed with commercial disperse dyes [Dispersol Red C-B (CI Disperse Red91) and Dispersol Blue B-G (CI Disperse Blue26)] at different temperatures and for different durations of time. It was observed that the solvent interaction with the polyester could be enhanced by using microwave heating. Solvent molecules interact rapidly, not only with the surface of the fibre but also with the interior parts. Scanning electron microscope results showed that structural modifications take place, which produce surface roughness and voids. This enhances the dye uptake by threefold in comparison to conventional methods. © 2011 The Authors. Coloration Technology © 2011 Society of Dyers and Colourists. Source

Kale K.H.,The Bombay Textile Research Association | Desaia A.N.,The Bombay Textile Research Association
Indian Journal of Fibre and Textile Research | Year: 2011

Surface modification of textiles by plasma treatment for imparting certain desired properties in terms of wettability, adhesion promotion, surface energy improvement and host of other characteristics has been the subjects of interest to researchers in the last few years. The plasma technology for textiles has emerged from conceptual embryonic stage to growth stage, where considerable research is yet to be carried out to translate the potential into industrial reality. This review aims at reporting the current status of the atmospheric pressure plasma technology in surface treatment of textiles, its effect on certain properties and the techniques used for characterisation of plasma-treated textile materials. The review paper also covers the studies carried out so far on the effect of atmospheric pressure plasma generated from non-polymerising gases like helium, argon, air, oxygen and nitrogen on the surface properties of both natural as well as synthetic textiles along with the changes in chemical and morphological characteristics of plasma-treated textile material using different qualitative and quantitative characterisation techniques, such as measurement of wicking height, contact angle, surface energy, SEM, AFM, FTIR and XPS. Source

Kale K.H.,The Bombay Textile Research Association | Palaskar S.,The Bombay Textile Research Association
Textile Research Journal | Year: 2011

Atmospheric pressure plasma polymerization of hexamethyldisiloxane (HMDSO) was carried out to impart water repellent properties to 100% cotton fabric. The dielectric barrier discharge generated from a mixture of argon and HMDSO was used for the plasma polymerization. The AATCC spray test, contact angle and surface energy measurements have shown good resistance to wetting with water. SEM and FTIR analysis have revealed deposition of plasma polymer and Si containing groups respectively, on the surface of the cotton. The effect of plasma polymerization on the physical properties like air permeability, tensile strength, and water vapour transmission were also studied. The plasma process parameters like treatment time and monomer flow have shown a significant effect on the physical, chemical and morphological properties of the cotton. Ash content of plasma treated cotton samples was calculated and it was found to be higher than the untreated cotton sample. The effect of washing cycles on the water repellent properties of HMDSO plasma polymer were investigated by subjecting it to repeated number of washing cycles. © The Author(s) 2010. Source

Deogaonkar S.C.,The Bombay Textile Research Association | Patil A.J.,The Bombay Textile Research Association
Indian Journal of Fibre and Textile Research | Year: 2014

Cotton fabrics have been treated with polypyrrole by oxidative in situ chemical polymerization to make them electrically conductive. Ammonium peroxidisulphate is used as an oxidizing agent to overcome corrosion problem caused by ferric chloride. The effect of polymerization duration, monomer concentration, and dopant addition has been studied with respect to conductivity and tensile strength of fabric. Coating of polypyrrole layer is evaluated in terms of electrical conductivity measurement. The conductive fabrics are characterized by HZATR- FTIR characterization and scanning electron microscopic analysis. Addition of dopant is found to improve conductivity of the fabric. Source

Kale K.,The Bombay Textile Research Association | Palaskar S.,North Carolina State University | Hauser P.J.,The Bombay Textile Research Association | El-Shafei A.,The Bombay Textile Research Association
Indian Journal of Fibre and Textile Research | Year: 2011

Polyester/cotton blended woven fabric has been treated with atmospheric pressure glow discharge plasma to improve its hydrophilic properties. Discharge has been generated at radio frequency using pure helium and helium-oxygen gas mixtures. The role of various plasma process parameters, such as discharge intensity, exposure time, gas flow rate, interelectrode distance and type of gas, on the hydrophilic and surface properties of the fabric has also been studied. The efficiency of the plasma treatment is assessed through capillary rise measurements, whereas surface characterization is performed with FTIR and SEM. It is observed that plasma process parameters play a key role in deciding properties of the plasma-treated fabric. Use of even low amount of oxygen as a reactive gas has been proved to be very effective in producing hydrophilic properties of plasma-treated polyester/cotton blended fabric. Source

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