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The effect of heat setting on the dyeability of differentially dyeable polyester fibres
Author(s) -
Teli M D,
Rao B Rama
Publication year - 1996
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.1478-4408.1996.tb01830.x
Subject(s) - polyester , cationic polymerization , diffusion , materials science , acid dye , chemical engineering , polymer chemistry , chemistry , composite material , dyeing , thermodynamics , physics , engineering
Apparent diffusion coefficients of two disperse dyes for so‐called easily dyeable/cationic‐dyeable polyester (ED‐CDPET) and cationic‐dyeable polyester (CDPET) fibres of identical linear density and sulphonic acid group content have been calculated. It was found that the diffusion coefficients of dyes for ED‐CDPET were far greater than those of dyes for CDPET. The dyeability at the boil without carrier, using disperse and cationic dyes on various ED‐CDPET and CDPET fibres, has been studied. ED‐CDPET was found to have higher dyeability at all levels of heat setting (irrespective of the dye used). The finest ED‐CDPET fibres showed maximum dye uptake as a result of increased surface area. Heat setting in the taut condition reduced dye uptake.