The effect of temperature, salt and pH, in the application of direct dyes on cotton
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Authors
Challain, Leonard John
Subjects
Advisors
Taylor, James L.
Date of Issue
1954-11
Date
Publisher
Language
en_US
Abstract
The success experienced in applying dyes to the new synethic fibers with high temperatures started several investigations as to the possibility of using the same high temperature technique in applying direct dyes to cotton These investigations demonstrated that some direct dyes can be applied to cotton successfully with high temperatures! however, many questions were raised such ass What is the heat stability of each dye? What is the effect of the pH of the dyebath on the stability of each dye? What is the effect of salt with high temperature? What is the effect of high temperature on the exhaustion of each dye? What is the effect of high temperature on the quality of the dyed product? The purpose of this thesis was to answer some of these questions, and thereby increase the empirical knowledge available to the dyeing industry, for three direct cotton dyes. The dyes used in this investigation were: Pontamine Fast Yellow RL, representing the Class A, or goodleveling, type direct dyej Pontamine Fast Orange EGL, representing the Class B 5 or salt-controllable, poor-leveling, type direct dye; and Pontamine Blue AX Cone, representing the Class C or temperature-controllable, poor-leveling, type direct dye.
Type
Thesis