TITLE:
Inhibitive Effect of NaCl and Citric Acid on the Colour Yield of Acid Dye on Nylon Fabric
AUTHORS:
Onyekachi Onyinyechi Nnorom, Placid Ikechukwu Anyanwu, Chima Kenneth Oguzie, Samuel D. Okonkwo
KEYWORDS:
Nylon 6, Acid Dye, Sodium Chloride, Citric Acid, Exhaustion, Colour Yield, Adsorption Kinetic
JOURNAL NAME:
Journal of Textile Science and Technology,
Vol.6 No.1,
February
12,
2020
ABSTRACT: 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.