Equalizing effect of beta-cyclodextrin on dyeing of polyamide 6,6 woven fabrics with acid dyes

摘要

Cyclodextrins (CD) are produced from starch by the action of cyclodextrin glycosyltransferase (CGTase) enzyme. Structurally, cyclodextrins consist of 6, 7, or 8 (alpha, beta, and gamma cyclodextrins, respectively) D-glucopyranosyl units connected by alpha-(1,4) glycosidic linkages. Having polar and hydrophilic outer sides and hydrophobic cavitation gives cyclodextrins a chance to form inclusion complexes with dyes in hydrophilic mediums. In this research, the equalizing effect of beta-cyclodextrins in dyeing of polyamide 6,6 wo-ven fabrics with 6 different acid dyes were investigated. From the experimental results, it was determined that the beta-cycloclextrin shows a retarding and equalizing effect in dyeings carried out with the dyes that show interaction with beta-CD. (c) 2006 Wiley Periodicals, Inc.