Premium
A Method for Determining the Distribution of Cationic Shrink‐resist Resins on Wool *
Author(s) -
GARCIADOMINGUEZ J.,
JULIA M. R.,
MAZA A.,
PUJOL J. M.,
SANCHEZ J.,
SHAW T.
Publication year - 1976
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.1478-4408.1976.tb03267.x
Subject(s) - cationic polymerization , wool , materials science , ultraviolet radiation , fluorescence , polymer chemistry , composite material , ultraviolet , resist , chemical engineering , chemistry , optics , optoelectronics , layer (electronics) , radiochemistry , physics , engineering
A method for determining the distribution of cationic shrink‐resist resins on wool has been developed. The method is based on a staining technique, using an anionic fluorescent brightening agent (FBA) under specific conditions in which the FBA stains the cationic resin in preference to the wool. When the stained samples are observed under ultraviolet radiation by means of the optical microscope, the areas on the wool fibres where resin is located fluoresce, whereas areas free from resin appear dark. The technique is simple and rapid, and enables the regularity of deposition of cationic resins on wool to be followed when the various parameters which play a role in the pretreatment of the fibre and the application of resins are changed. Regularity of resin deposition is important in the achievement of high levels of shrink‐resistance in treated fabrics.