INFLUENCES OF HYDROPHOBIC GROUPS ON THE FASTNESS TO WASHING OF RAYON FIBERS DYED WITH CATIONIC DYES

Autor:	Fumiyo Hirose, Takeo Sone
Rok vydání:	1984
Předmět:	Materials science Diffusion Cationic polymerization Cellophane General Medicine law.invention Disperse dye Contact angle chemistry.chemical_compound Chemical engineering chemistry law Polymer chemistry Dyeing
Zdroj:	Sen'i Gakkaishi. 40:T78-T85
ISSN:	1884-2259 0037-9875
DOI:	10.2115/fiber.40.2_t78
Popis:	In a series of our studies on improvement of dyeing properties of rayon by the introduction of hydrophobic urethane groups, this study concerns how the fastness to washing is influenced by the modification.The affinities and the diffusion coefficients of four cationic dyes were measured using modified rayon fibers. The fastness was evaluated for the fibers dyed with the cationic dyes and with a disperse dye. The surface property of the modified rayon fibers was assayed by referring to the contact angles of water on cellophane films reacted with the urethanes.The conclusions obtained are summarized as follows:1. The enhancement of the affinities of the dyes to the modified fibers improves the fastness considerably.2. The modification results a sizable reduction in the rates of diffusion of the dyes.3. The enhanced hydrophobicity of the surface of modified rayon scarcely improves the fastness.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0bd2edcd124c1eef01d18f694a2526a8 https://doi.org/10.2115/fiber.40.2_t78 Zobrazit plný text záznamu