Sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing

Indigo carmine can be used as model for a blue natural colorant for wool and hair dyeing in a one-bath procedure. The sorption and dyeing properties of indigo carmine on wool are studied as a prerequisite for the successful application in combination with natural dye. To evaluate the suitable condit...

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Main Authors: Komboonchoo S., Bechtold T.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-77951795989&partnerID=40&md5=39dbc79f155b8bb6eb4c26082a55c714
http://cmuir.cmu.ac.th/handle/6653943832/6292
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Institution: Chiang Mai University
Language: English
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spelling th-cmuir.6653943832-62922014-08-30T03:24:03Z Sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing Komboonchoo S. Bechtold T. Indigo carmine can be used as model for a blue natural colorant for wool and hair dyeing in a one-bath procedure. The sorption and dyeing properties of indigo carmine on wool are studied as a prerequisite for the successful application in combination with natural dye. To evaluate the suitable conditions for the dyeing process, different pH, dye concentrations and temperatures were studied. The dyeing and sorption characteristics on wool were determined on the basis of spectrophotometry and color measurement. Both high dye sorption and color strength were obtained when dyeing at elevated temperature, e.g. 80°C, and lower pH, e.g. pH 3. However, there is significant potential to apply the dyestuff also at temperatures in the range of 40-60°C and pH values of 4-5. Depending on the dyebath pH the sorption isotherms follow the Langmuir- or Freundlich-type isotherm. At pH 3 and 4 Langmuir isotherms are observed, while at pH 5, 6 and 7 sorption on wool follows the Freundlich isotherm behavior. From the dyeing isotherms the standard affinity (Δμ) of the dyeing step was determined. At pH 3 the heat of dyeing (ΔH) and entropy of dyeing (ΔS) were calculated as 40.22 kJ mol-1 and 0.19 kJ mol-1 K-1, respectively. © The Author(s), 2010. 2014-08-30T03:24:03Z 2014-08-30T03:24:03Z 2010 Article 405175 10.1177/0040517509342319 TRJOA http://www.scopus.com/inward/record.url?eid=2-s2.0-77951795989&partnerID=40&md5=39dbc79f155b8bb6eb4c26082a55c714 http://cmuir.cmu.ac.th/handle/6653943832/6292 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description Indigo carmine can be used as model for a blue natural colorant for wool and hair dyeing in a one-bath procedure. The sorption and dyeing properties of indigo carmine on wool are studied as a prerequisite for the successful application in combination with natural dye. To evaluate the suitable conditions for the dyeing process, different pH, dye concentrations and temperatures were studied. The dyeing and sorption characteristics on wool were determined on the basis of spectrophotometry and color measurement. Both high dye sorption and color strength were obtained when dyeing at elevated temperature, e.g. 80°C, and lower pH, e.g. pH 3. However, there is significant potential to apply the dyestuff also at temperatures in the range of 40-60°C and pH values of 4-5. Depending on the dyebath pH the sorption isotherms follow the Langmuir- or Freundlich-type isotherm. At pH 3 and 4 Langmuir isotherms are observed, while at pH 5, 6 and 7 sorption on wool follows the Freundlich isotherm behavior. From the dyeing isotherms the standard affinity (Δμ) of the dyeing step was determined. At pH 3 the heat of dyeing (ΔH) and entropy of dyeing (ΔS) were calculated as 40.22 kJ mol-1 and 0.19 kJ mol-1 K-1, respectively. © The Author(s), 2010.
format Article
author Komboonchoo S.
Bechtold T.
spellingShingle Komboonchoo S.
Bechtold T.
Sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing
author_facet Komboonchoo S.
Bechtold T.
author_sort Komboonchoo S.
title Sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing
title_short Sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing
title_full Sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing
title_fullStr Sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing
title_full_unstemmed Sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing
title_sort sorption characteristics of indigo carmine as a blue colorant for use in one-bath natural dyeing
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-77951795989&partnerID=40&md5=39dbc79f155b8bb6eb4c26082a55c714
http://cmuir.cmu.ac.th/handle/6653943832/6292
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