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Extraction, identification and sorption studies of dyes from madder on wool
Author(s) -
Farizadeh Khostro,
Montazer Majid,
Yazdanshenas Mohammad Esmaiel,
Rashidi Abosaeid,
Malek Reza Mohammad Ali
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30051
Subject(s) - dyeing , adsorption , freundlich equation , wool , langmuir , sorption , enthalpy , chemistry , polyamide , extraction (chemistry) , standard molar entropy , partition coefficient , chromatography , chemical engineering , nuclear chemistry , materials science , organic chemistry , thermodynamics , standard enthalpy of formation , composite material , physics , engineering
Since the last decade, the application of natural dyes on textile materials is gaining popularity all over the world, possibly because of increasing awareness of environment, ecology, and pollution control. In this research, extraction of dyes from madder at different conditions has been studied. The extracted dyes from madder were examined by TLC and HPLC. The adsorption properties of the dyes extracted from madder on natural polyamide fibers (wool) were also determined. The rate of dyeing at different temperatures, as well as the values of standard affinity, entropy, and enthalpy was calculated. The results indicated that increase of temperature leads to decrease the values of partition ratio and affinity. The adsorption isotherm was tested by fitting the adsorption data with Langmuir, Freundlich, BET, and Temkin isotherms. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009