Author(s)

Onyekachi Onyinyechi Nnorom^*, Placid Ikechukwu Anyanwu, Chima Kenneth Oguzie, Samuel D. Okonkwo

Department of Polymer and Textile Engineering, Federal University of Technology, Owerri, Nigeria.

Nylon 6 fabric was dyed with C.I. Acid Yellow 23 at a temperature 50 °C using sodium chloride (NaCl) and citric acid as auxiliaries. The adsorption kinetic mechanism was studied using two models. Results of the UV-Vis spectroscopy indicated that colour yield of C.I. Acid Yellow 23 reduced when more than 1% (acid) and 5% (salt) concentration were used respectively for dyeing. NaCl however had the most inhibitive effect on the dye colour yield. The adsorption kinetics mechanism result fitted the pseudo-second-order-kinetic model with R² of 0.993.

Nylon 6, Acid Dye, Sodium Chloride, Citric Acid, Exhaustion, Colour Yield, Adsorption Kinetic

Nnorom, O. , Anyanwu, P. , Oguzie, C. and Okonkwo, S. (2020) Inhibitive Effect of NaCl and Citric Acid on the Colour Yield of Acid Dye on Nylon Fabric. Journal of Textile Science and Technology, 6, 49-58. doi: 10.4236/jtst.2020.61005.