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Dye‐uptake behaviour of nylon‐6 filaments and its structural dependence
Author(s) -
Gupta V B,
Chavan R B,
Kulkarni M,
Natarajan K M
Publication year - 2000
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.1478-4408.2000.tb00015.x
Subject(s) - nylon 6 , acid dye , disperse dye , chemistry , chemical structure , chemical engineering , polymer chemistry , composite material , materials science , polymer , organic chemistry , dyeing , engineering
This article presents results of a study made in two parts on the dye‐uptake behaviour of nylon‐6 filaments. In the first part, nylon‐6 monofilaments were dry heat‐set at temperatures between 80 and 200°C and dyed under similar conditions with two dyes, viz. an acid and a disperse dye. In the second part, dry‐set and steam‐set nylon‐6 multifilament yarns were dyed with an acid dye. The roles played by the physical structure of the fibre and chemical affinity between the dye and the fibre have been examined in an effort to explain the differences in the dye uptake results for the two dyes. It was found that the physical structure has a predominant effect in both cases; however, in the case of the acid dye, chemical affinity also plays an important role. On the basis of structural studies, some comments are made on how structural reorganisation proceeds in nylon‐6 fibre on heat‐setting.