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Effects of additives on the dyeing of cotton yarn with the aqueous extract of Combretum latifolium Blume stems
Author(s) -
Chairat Montra,
Bremner John B.,
Samosorn Siritron,
Sajomsang Warayuth,
Chongkraijak Wassana,
Saisara Agnet
Publication year - 2015
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/cote.12158
Subject(s) - dyeing , mordant , aqueous solution , chemistry , alum , adsorption , glyoxal , pulp and paper industry , aqueous extract , yarn , nuclear chemistry , materials science , composite material , organic chemistry , traditional medicine , engineering , medicine
Flavonoid constituents from the aqueous extract of the stems of Combretum latifolium Blume sourced in Thailand have potential use as dyestuffs for cotton dyeing. In an effort to improve current natural dyeing methods with this extract, further aspects of the process were studied. It was found that, before equilibrium was reached, an increase in temperature led to an increase in dye adsorption rate of the extract; the initial rate and extent of dye adsorption was further increased by the addition of sodium chloride to the dyebath. In addition, cotton yarn pretreated with a chitosan solution (with and without a crosslinking glyoxal solution), followed by dyeing with C. latifolium extract, provided better depth of shade and also gave better fastness to light and washing than the untreated cotton yarn. Post‐mordanting cotton yarn with a biomordant solution from Memecylon scutellatum leaves also gave good light and wash fastness of the resulting dyed cotton, comparable with the dyeing results with the less environmentally friendly alum as a mordant.