Abstract
In our work of this paper, we study the effect of surface modification of polyester and nylon fabrics induced by DC plasma discharge and/ or nano-siliver treatments .DC plasma discharge was employed at first, as a function of plasma device parameters including different time, different current and different hydrostatic pressure using chemically inert working gas: argon or nitrogen. Optimization of the performance of the applied DC plasma discharge with various applied conditions were performed using Fourier Transform Infra-Red (FTIR) Spectroscopy spectral analysis, by following up the changes in the peak intensity values of the characteristic functional groups that characterize polyester fabric. Then the dyeing properties of different pretreated fabrics with plasma by the best conditions are subjected to nano-silver treatment by concentration 50 ppm under the effect of different dye concentrations, different dyeing temperature and different dyeing time. Finally, the fastness properties to light and washing for the treated samples were studied. The results obtained showed that both of the dyeing parameters and fastness properties were highly improved by the treatment of fabrics by either individual plasma treatment or combined DC cold plasma and nano-silver treatments.
Highlights
The pre-treatment and finishing of textiles by non-thermal plasma technologies becomes more and more popular as a surface modification technique
The present work in this paper has focused on evaluating the effect of three different treatments on polyester and nylon fabrics, which are: plasma pretreatments using (Ar or N2),silver-nano-particles with different concentrations, and,plasma pretreatments with best conditions combined with silver-nano-particles treatments
Coating the silver nanoparticles on polyester and nylon fabrics surface pretreated with plasma at optimum conditions with solutions of silver nanoparticles of two concentrations (25-50 ppm.) The conditions for the application of silver nanoparticles by an exhaust method were established to be: an acidic pH of 4, a temperature of 40◦C, and a time of 20-30 minutes [14]
Summary
The pre-treatment and finishing of textiles by non-thermal plasma technologies becomes more and more popular as a surface modification technique. Most of the presented methods [4] for stabilizing of inorganic nano-structured materials on the textile surfaces need several steps of preparation, functionalization, final treatment, drying, curing and so on This is forced high cost and it is very time consuming for high-scale manufacturing production [5]. It is well known that the dyeing of synthetic fabrics depends mainly on the nature, chemical and physical properties of substrate and dye applied Other factors such as temperature ,time of dyeing and dispersing agents added contribute considerably to the dyeing process [9]. Coating the silver nanoparticles on polyester and nylon fabrics surface pretreated with plasma at optimum conditions with solutions of silver nanoparticles of two concentrations (25-50 ppm.) The conditions for the application of silver nanoparticles by an exhaust method were established to be: an acidic pH of 4, a temperature of 40◦C, and a time of 20-30 minutes [14]. The fastness to light was performed according to standard method of testing [19] using Tera's Light Fastness Tester [20]
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