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Studies on the Absorption of Methylene Blue by Jute Fibre
Author(s) -
SABKAB P. B.,
CHATTERJEE H.
Publication year - 1948
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.1478-4408.1948.tb02511.x
Subject(s) - methylene blue , cationic polymerization , absorption (acoustics) , chemistry , lignin , hue , chemical engineering , organic chemistry , materials science , composite material , optics , catalysis , photocatalysis , engineering , physics
The absorption of methylene blue by jute fibre, both raw and variously treated, has been measured undcr different conditionn. The dye absorption depends largely on the pH of the dyebath. but is practically independent of time, temperature, and concentration. The maximum absorption agrees fairly well with the acid value of the fibre, both raw and treated. It is suggested that cationic exchange takes place between polyuronic acids of the fibre and methylene blue. The strong natural affinity of jute for basic dyes does not appear to be due to the presence of lignin, which has a comparatively low absorption value. A much deeper hue can be obtained with basic dyes if the fibre is given a mild preliminary treatment with dilute caustic soda at room temperature