A Study on the Fluorescence Properties of Fluorescent Dyes on Polyester Fibrics

Under the experimental conditions, the fluorescence reflectance of fabrics improved with the increase of the concentration of fluorescent dyes, but it showed downtrend over a certain concentration; the fluorescence reflectance was the highest at about pH = 5; The fluorescence reflectance of dyed fabrics was improved by fluorescence brightening agent (FBA), when the concentration of FBA in Fluorescent Yellow 2GL was increased from 0.1% to 5%, the fluorescence reflectance was improved from 8.43% to 18.59%, FBA only improved the brightness of non-fluorescent dyes, and no fluorescence was observed, the fluorescence reflectance of fabrics dyed with fluorescent dyes was lowered with the adding of non-fluorescent dyes.