Abstract
Glyoxal was reacted with carbamoylethylated and carboxyethylated cotton under vatious conditions using: (a) two-step process employing alkaline and metal salt catalyst, (b) alkaline catalysts, (c) built-in acidity of the acid form of car boxyethyl substituent, and (d) low pH in the presence of moisture (moist cure process). It was found that the modified cotton fabrics after treatment with glyoxal produced superior wrinkle recovery with better retention of strength properties than the original unmodified fabric given parallel treatments. From the indirect evidence of comparative performance characteristics of the modified cotton and original cotton fabric, it is proposed that glyoxal may react monofunctionally with carbamoylethyl groups under alkaline condition and on curing in the presence of a metal salt catalyst, the reaction of pendent aldehyde groups may occur with cellulose hydroxyl groups.
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