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Study of Cellulose Substantivity and of Cellulose–Reactive Dye Reactions by the Monolayer Method
Author(s) -
GILES CHARLES H.,
McIVER NORMAN
Publication year - 1974
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.1478-4408.1974.tb03187.x
Subject(s) - cellulose , monolayer , cationic polymerization , dyeing , chemistry , janus , polymer chemistry , molecule , chemical engineering , reactive dye , residue (chemistry) , organic chemistry , materials science , nanotechnology , biochemistry , engineering
Cellulose monolayers have been spread on dilute solutions of Janus Red B (C. I. 26115) a cationic substantive dye (I); a monochlorotriazinyl (hot–dyeing) reactive dye (II) and a dichlorotriazinyl (cold–dyeing) reactive dye (III), under various conditions. I forms mixed films, in which the dye molecules (which are surface–active) are probably oriented between the cellulose chains. The substantivity of this dye for cellulose fibres has no apparent influence on its behaviour towards the film, thus re–inforcing previous conclusions that substantivity is largely a result of fibre morphology. II, at high pH, reacts with the film, making it relatively incompressible, but not causing much expansion. The dye, after reaction, is believed to be oriented beneath the film. III shows much more marked effects than II. With rise in pH and on standing for 24 h or more, it causes a large expansion of the film, which becomes incompressible with an immeasurably high viscosity. It is suggested that the dye molecules are in the surface, interposed between, and crosslinking, the cellulose chains, and appear to have reacted on each side of each glucose residue.