Premium
Low‐temperature dyeing of meta‐aramid fabrics pretreated with 2‐phenoxyethanol
Author(s) -
Sheng Dan,
Wang Yunli,
Wang Xin,
Lu Xuefeng,
Jiang Shan,
Pan Heng,
Cao Genyang,
Xu Weilin
Publication year - 2017
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.12283
Subject(s) - dyeing , aramid , crystallinity , fourier transform infrared spectroscopy , thermogravimetry , cationic polymerization , thermal stability , phase (matter) , materials science , chemical engineering , aqueous solution , nuclear chemistry , chemistry , polymer chemistry , composite material , organic chemistry , fiber , engineering
In this study, meta‐aramid fibres were pretreated with 2‐phenoxyethanol under different conditions to investigate the effect of 2‐phenoxyethanol on the dyeing of aramid at low temperature (95 °C). Structural alteration of the pretreated fibres was reflected by thermogravimetry and Fourier transform infrared spectroscopy, indicating more H‐bonds, lower crystallinity, and slightly lower thermal stability. The change in structure showed that 2‐phenoxyethanol combined with the fibre macromolecules and resulted in swelling of the fibre. Creation of a biphasic system through the addition of 2‐phenoxyethanol to the dyeing solution resulted in the cationic dye being partitioned more towards the 2‐phenoxyethanol‐rich phase than the aqueous phase. The cross‐sections of the dyed fibre suggested that the meta‐aramid fibre could be dyed more thoroughly with an appropriate concentration of 2‐phenoxyethanol. The colour value of aramid fabric was tested by varying the concentration of 2‐phenoxyethanol and the temperature of pretreatment, indicating a dramatic improvement in dyeing performance to aramid after 2‐phenoxyethanol pretreatment. 2‐Phenoxyethanol pretreatment and low‐temperature dyeing can overcome the problems of chemical and energy waste while producing a satisfying colour.