Adsorption Kinetics of Reactive Dyes on Silk with Octyl Butyl Dimethyl Ammonium Bromide as Accelerant

Abstract

With octyl butyl dimethyl ammonium bromide (OBDAB) as accelerant, adsorption kinetics of dyeing silk with three reactive dyes was studied in this paper. As concentration of OBDAB increased, the dye-uptake rate increased. The highest dye-uptake rates of three reactive dyes could reach to 89.40%~98.98% and the concentration of OBDAB was only 6-8g/L. This showed OBDAB was an effective accelerant. Pseudo first- and second-order kinetic models were used to analyze the adsorption kinetic data. The experimental data were found to follow the second-order kinetic model. Meanwhile, the initial dye adsorption rates of reactive red dye B-3BF, reactive yellow dye B-4RFN and reactive orange dye B-2RLN increased as temperature increased, and the activation energy of them were found respectively to be 28.42,13.14,32.90 kJ/mol.The positive values of and obtained indicated that reactive dyes adsorption with OBDAB as accelerant was an endothermic process. The conclusion showed OBDAB was a potential accelerant.

Dyeing Accelerant Octyl Hexyl Dimethyl Ammonium Bromide on Silk with Reactive Dyes

“…In our former works, we found the small organic cationic molecule were very efficient accelerant for reactive dye dyeing on silk [4,5]. The fixation rate was very high [6,7].…”

Development and optimization of a non-traditional extraction process of yellow colorant from safflower petals as a natural colorant

“…The linear regression correlation coefficient (R) values were utilized to fruition the validity of the selected model. The pseudo-first-order model is considered as a simple kinetic of adsorption analysis, equation 6 can describe the kinetics of the adsorption processes [21,22].…”

The Interaction between Reactive Dye and Octyl Trimethyl Ammonium Chloride

“…In order to improve the dyeing rates, fixation rates of reactive dyes dyeing on silk, many workers have developed various new dyeing methods [1]. In the former works, we found that a series of small organic cationic molecule named accelerant were very efficient accelerants for reactive dye dyeing on silk [2,3], such as octyl trimethyl ammonium chloride [4], dihexyl dimethyl ammonium bromide [5], hexyl butyl ammonium bromide and octyl butyl ammonium bromide [2,6]. The dosage of small organic cationic molecule was 10-40 times lower than normal salt, and the fixation rates were more than 90%.…”