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Alkaline weight reduction and dyeing properties of black dope‐dyed poly(ethylene terephthalate) microfibre fabrics
Author(s) -
Mamun Kabir Shekh Md,
Koh Joonseok
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.12269
Subject(s) - dyeing , microfiber , materials science , polyester , dissolution , ethylene , carbon black , composite material , cationic polymerization , chemical engineering , nuclear chemistry , polymer chemistry , chemistry , organic chemistry , catalysis , natural rubber , engineering
Sea–island‐type, black dope‐dyed poly(ethylene terephthalate) microfibre fabrics were compared with normal sea–island‐type PET microfibres in terms of their thermal properties, alkaline weight reduction, and dyeing properties. A comparison of the weight reduction behaviours of the two microfibre yarns revealed that the microfibre yarn containing carbon black exhibited a higher dissolution speed than that containing no carbon black. The incorporation of carbon black particles in the polyester fibre matrix therefore accelerates the degradation of the less crystalline sea component during alkali treatment. A cationic dye staining method was used to monitor the alkaline dissolution behaviour of the sea–island‐type PET microfibres, and compared with the K / S values and the colour difference, the f k value is the most‐desirable indicator for determination of the termination point of the alkaline dissolution process. The colour strength and the colour fastness of the dope‐dyed sea–island‐type PET microfibre fabrics are superior to those of the normal type.