酸素系漂白処理過程中の鉄吸着繊維の劣化に対するアミノ酸の防止効果

概要

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The deterioration of iron-absorbed fiber during the bleaching process when using sodium percarbonate was studied, because the activity of peroxide bleaching has been found to be accelerated by the presence of metal (copper, cobalt, nickel and iron) within the fabric. In addition, various amino acids were added and the effect of each of them on this deterioration was investigated. The following results were obtained : 1. The extensibility of iron-adsorbed silk, rayon, acetate, nylon and polyester fiber after bleaching one time (0.1wt. %, 60℃, 30min) was found to be lower than that of untreated fibers. 2. When the fibers were bleached within the addition of glutamic acid, histidine, serin or glycin (1,5,10mM), an inhibitory effect on this reduced extensibility was obserbed in the case of iron-adsorbed silk rayon, and acetate fiber. This inhibitory effect varied significantly according to the concentration of amino acid used. 3. The inhibitory effect of the amino acids on nylon and polyester was obserbed following repeated bleaching 3-5 times under the same conditions as above. 4. This inhibitory effect of amino acids was confirmed by observing morphorogical changes using a scanning electron microscope.
福岡女子大学の論文
1997-02-25