ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 9 1 2021 01 01 Modeling and Optimization of Colloidal Nanosilver Pretreatment on Acid-Free Dyeing, Antibacterial, and Hydrophilicity of Polyamide-6,6 Using Response Surface Methodology Modeling and Optimization of Colloidal Nanosilver Pretreatment on Acid-Free Dyeing, Antibacterial, and Hydrophilicity of Polyamide-6,6 Using Response Surface Methodology 27 40 126732 EN Journal Article 2021 02 20 Enhancement of dyeability, antibacterial, and<br />hydrophilicity of polyamide-6,6 was introduced with colloidal<br />silver nanoparticles (CSNs) and butane tetra carboxylic acid<br />(BTCA) using cubic statistical models. Different concentrations<br />of CSNs and BTCA were investigated to evaluate their<br />influences on dyeability, antibacterial, hydrophilicity, and<br />color change properties of polyamide-6,6 fabric by applying<br />statistical design of D-optimal method. Antibacterial property<br />of treated sample was tested by Gram-negative bacterium<br />Escherichia coli and Gram-positive bacterium Staphylococcus<br />aureus. To achieve optimum conditions for polyamide-6,6,<br />response surface methodology was also utilized. Here, CSNs<br />were stabilized on polyamide-6,6 surface using BTCA as<br />crosslinking agent in order to enhance washing durability.<br />Scanning electron microscopy and energy-dispersive<br />spectroscopy were employed to characterize presence of CSNs<br />on surface of polyamide-6,6 and elemental composition of<br />treated polyamide-6,6 fabrics. Treatment optimization led to<br />considerably absorption enhancement of C.I. Acid Red 81 dye<br />through cubic statistical models on polyamide-6,6 surfaces as<br />well as antibacterial and hydrophilicity characteristics and<br />minimized color change caused due to CSNs influence. The<br />principal result is synergetic effect utilizing BTCA accompany<br />with CSNs on enhancing and durability of mentioned<br />properties quantitatively in optimized conditions. Overall,<br />the suggested method could be introduced as a new route,<br />disclosing various desirable multifunctional characteristics to<br />polyamide-6,6 fabric. http://www.itast.ir/article_126732_db2087780af39a6d74174b7c729af7cc.pdf