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Palaskar S.S.,The Bombay Textile Research Association | Desai A.N.,The Bombay Textile Research Association | Shukla S.R.,Institute of Chemical Technology
Indian Journal of Fibre and Textile Research | Year: 2016

Atmospheric pressure dielectric barrier discharge plasma treatment for fabric surface activation to facilitate deposition of nano silicon oxide, and nano-titanium dioxide onto cotton fabric has been studied. It is aimed to study the possibility of engineering a multifunctional cotton fabric. The treated fabric is evaluated for ultraviolet protection factor (UPF), antimicrobial activity, and flame retardancy as a functional finish. Surface morphology (SEM), thermo-gravimetric analysis (TGA), and mechanical properties are also studied. Scanning electron microscopy shows deposition of nano particles onto the fabric. He-O2 plasma pre-treatment improves the flame retardancy, UPF, antibacterial activity and thermal stability of the samples as compared to untreated samples. In order to improve the wash fastness of the finish, HMDSO plasma polymer is deposited on the surface of the finished fabric which acts as a barrier layer and imparts durable finish on cotton textiles. © 2016, National Institute of Science Communication and Information Resources (NISCAIR). All rights reserved.


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.


Sathianarayanan M.P.,The Bombay Textile Research Association | Chaudhari B.M.,The Bombay Textile Research Association | Bhat N.V.,The Bombay Textile Research Association
Indian Journal of Fibre and Textile Research | Year: 2011

Methanolic extract of ajwain seeds (wild celery seed) has been analyzed by GC-MS to establish its chemical constituents. The extract is found to have good antibacterial property to selected micro-organisms and hence has been applied on cotton fabric to impart antimicrobial property and to evaluate its wash durability. It is found that the treated fabric shows good antibacterial property to both Gram positive and Gram negative organisms, but has poor wash durability. Hence, to fix the herbal extract on cotton fabric different techniques, like microencapsulation, cross-linking and a combination of both, have been employed. It is observed that herbal extract encapsulated with acacia gum is durable up to 15 normal wash cycles. Herbal extract cross-linked with a resin is found to be durable up to 10 washes. In both the cases, fabric lost one of the physical properties like crease recovery angle or tensile strength. However, a combined technique shows that treated fabrics are durable up to 15 washes without compromising physical properties.


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.


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.


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.


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.


Patil A.J.,The Bombay Textile Research Association | Deogaonkar S.C.,The Bombay Textile Research Association
Textile Research Journal | Year: 2012

In the present work, a study of two-step in situ chemical polymerization of polyaniline (PANI) on cotton fabric was undertaken by employing the jig-dyeing principle. The important reactant parameters, such as monomer concentration, oxidant/monomer ratio, protonic acid concentration and the duration of polymerization, were studied. The structural and morphological features of the resultant fabric were analyzed by Fourier transform infrared-attenuated total reflectance and scanning electron microscopy studies. The electrical conductivity was expressed as both bulk and surface properties. With the present experimental set up, a minimum electrical surface resistivity of about 103 ohm/square was achieved. The present investigation revealed that key parameters, such as protonic acid concentration, oxidant/monomer ratio and the duration of polymerization, are influential at lower monomer concentrations. Further, the treatment method and fabric construction appear to have a predominant role in the deposition, thereby affecting the resultant conductivity. The PANI-coated cotton fabrics thus produced are suitable in application areas of static protection and sensors for smart textiles. The described method of in situ polymerization has a potential for scaling up for bulk production. © The Author(s) 2012 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.


Kale K.H.,The Bombay Textile Research Association | Palaskar S.S.,The Bombay Textile Research Association | Kasliwal P.M.,The Bombay Textile Research Association
Indian Journal of Fibre and Textile Research | Year: 2012

This paper reports a novel approach for surface modification of 100% cotton and 100% polyester fabrics with atmospheric pressure plasma enhanced chemical vapour deposition (APPECVD) of hexamethyldisiloxane (HMDSO). The chemical and structural nature of HMDSO plasma polymers deposited on the fabric surface with respect to discharge power has been studied with FTIR spectroscopy. The functional property such as water repellency imparted to the polyester and cotton fabrics after plasma treatment has been determined by spray test. It is observed that water repellent properties improve after plasma treatment. Moreover, the intrinsic hydrophilic or hydrophobic behaviour of cotton and polyester substrates has been found to have significant effect on the water repellency of the plasma treated samples. Deposition of plasma polymer on the surface of treated samples has been substantiated by scanning electron microscopy. It has been observed that tensile strength of cotton fabric remains unaffected by the given experimental conditions, whereas that of polyester fabric considerably deteriorates at higher discharge powers.

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