ADSORPTION OF CATIONIC DYE ON THE FIBERS BEING INTRODUCED ACID GROUPS BY CARBOXYMETHYLATION

Autor:	Mitsuo Kimura, Hiroaki Tonami, Takeo Sone
Rok vydání:	1980
Předmět:	Adsorption Materials science Polymer chemistry Enthalpy Cationic polymerization General Medicine Dyeing Colour fastness
Zdroj:	Sen'i Gakkaishi. 36:T196-T200
ISSN:	1884-2259 0037-9875
DOI:	10.2115/fiber.36.5_t196
Popis:	Our previous study has shown that the rayon fiber in which both acid and hydrophobic groups were introduced, exhibits good dyeing property for cationic dyes and good colour fastness to washing.In the present paper, the effects of the acid groups introduced by carboxymethylation on the fastness of the fibers are discussed thermodynamically to find the origin of the good fastness.Results obtained are as follows:When only acid groups were introduced into the rayon fibers, the affinities of a cationic dye, C. I. Basic Red 18, to the fiber are the same as those to the untreated fibers, and the enthalpy and entropy changes on the dyeing differ not much from the values for the untreated fibers.Therefore, it is concluded that the introduction of acid groups into the rayon fibers is not effective to improve the fastness to washing of dyed fibers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6a9ba6491998fa0db3c60ae7f856f24d https://doi.org/10.2115/fiber.36.5_t196 Zobrazit plný text záznamu