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Dyeing behaviour of poly(ethylene terephthalate) fibres in supercritical carbon dioxide
Author(s) -
Kawahara Yutaka,
Kikutani Takeshi,
Sugiura Kazuaki,
Ogawa Satoshi
Publication year - 2001
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/j.1478-4408.2001.tb00073.x
Subject(s) - supercritical carbon dioxide , dyeing , supercritical fluid , ethylene , materials science , spinning , carbon dioxide , sublimation (psychology) , composite material , chemical engineering , poly ethylene , crystallite , polymer chemistry , chemistry , organic chemistry , catalysis , psychology , metallurgy , psychotherapist , engineering
A new type of poly(ethylene terephthalate) fibre was developed via a high‐speed spinning technique. The dyeing behaviour of this fibre in supercritical carbon dioxide was compared with that of a fibre produced by conventional methods. At lower temperature and pressure, the high‐speed spun fibre, which had inherently larger crystallite sizes and lower birefringence, showed a larger dye uptake. However, when the supercritical conditions were elevated to 125 °C and 230 bar, the dye uptake of both types of fibre increased markedly and the difference in dye uptake between the fibres was reduced. The new type of fibre showed slightly higher grades in sublimation fastness tests.