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Solvent pretreatments of wool and their effect on shrinkproofing and the rate of dye uptake
Author(s) -
Cafarella V A,
Cornell H J,
Rivett D E
Publication year - 1988
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1988.tb01131.x
Subject(s) - dyeing , acetone , chloroform , wool , chemistry , methanol , extraction (chemistry) , solvent , ethanol , nuclear chemistry , acid dye , chromatography , organic chemistry , materials science , composite material
The extraction of wool fabric with organic solvents, especially perchloroethylene, may be an effective pretreatment for certain dyeing processes. A 2times2 h reflux with perchloroethylene prior to dyeing has been found to significantly lower the time of half dyeing for both a reactive dye (Lanasol Blue 3R) and a milling acid dye (Coomassie Blue BL200). Non‐dyeing effects were observed after the fabric was refluxed with acetone/water mixture, ethanol and chloroform/methanol mixture, but were not observed after refluxing with perchloroethylene or rinsing with acetone/water mixture. Reductions in the minimum effective treatment level (METL) of Basolan SW were noted after rinsing or refluxing with acetone/water mixture, perchloroethylene, ethanol and chloroform/methanol mixture. The shrinkproofing and dye‐huptake tests suggested that there were differences in the types of materials extracted. There were also observed differences in the amounts of materials extracted by the different pretreatments.