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Differential dyeing cotton. 1 – Preparation and evaluation of differential dyeing cotton yarn
Author(s) -
Clipson Jacqueline A,
Roberts George A F
Publication year - 1989
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.1478-4408.1989.tb01204.x
Subject(s) - dyeing , viscose , cellulose triacetate , cationic polymerization , reagent , chemistry , yarn , cellulose , materials science , polymer chemistry , chemical engineering , pulp and paper industry , composite material , organic chemistry , engineering
Colourless cationic and anionic cellulose‐reactive compounds have been prepared and applied to cotton yarns. Yarn pretreated with cationic reagents shows better uptake of acid and direct dyes than does untreated yarn, and since the degree of differential uptake depends on the level of pretreatment, which may be readily controlled, fabrics exhibiting a variety of tone‐on‐tone effects may be produced. Treatment with an anionic reagent gives cotton dyeable with basic dyes, and combinations of anionic‐ and cationic‐treated yarns may be cross‐dyed in a single‐bath, one‐step process with very little cross‐staining. Pretreated cotton may be converted to viscose or cellulose triacetate fibre with retention of the modified dyeing properties, thus providing routes to differential dyeing viscose and triacetate fibres. We wish to thank the British Technology Group for financial support of this work for the period 1983–86, and Mrs F A Wood for technical assistance.