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Acid dyeing isotherms of cotton fabrics pretreated with mixtures of reactive cationic agents
Author(s) -
ElShishtawy Reda M,
Youssef Y A,
Ahmed Nahed S E,
Mousa A A
Publication year - 2004
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2004.tb00229.x
Subject(s) - dyeing , cationic polymerization , sorption , chemistry , langmuir adsorption model , curing (chemistry) , adsorption , langmuir , acid dye , nuclear chemistry , polymer chemistry , chemical engineering , organic chemistry , engineering
Reactive cationic agents, phenylmonochlorotriazinyl and epoxypropyl, are used for cotton pretreatment using a pad–dry–curing technique. The dyeability of cationised cotton fabrics using CI Acid Red 1, determined spectrophotometrically for the residual dyebath, has been dependent on the cationic agent concentration and the appropriate mixture used. Comparative sorption isotherms, rate of dyeing at different temperatures, standard affinity, entropy and heat of dyeing for three different pretreated fabrics have been calculated and discussed. The equilibrium data obtained were fitted by the Langmuir isotherm model, allowing the corresponding sorption parameters to be determined.