Performance Evaluation of Fluorescence and Photostability of Coumarin Disperse Yellow 82

Aba Akebi Atta-Eyison

doi:10.4236/msce.2020.81002

Abstract

This paper describes some significant fluorescent and photostability properties of Coumarin Disperse Yellow 82. The study aims at spectrophotometric colour measurements on fluorescence of Coumarin Disperse Yellow 82. Spectral parameters such as relative strength percentage and reflectance with different dye concentrations performance on polyester and polyester/cotton substrates were assessed. Light fastness property was also evaluated. Evaluation of photodegradation quantum yield of the dye in methanol, ethanol and N,N-dimethylformamide (DMF) under aerobic and anaerobic conditions have also been investigated. The relative strength, reflectance and light fastness of dyed polyester for the different dye concentrations were proven to be better in comparison to dyed polyester/cotton blend. The photodegradation quantum yield of dye in methanol, ethanol and DMF solutions under anaerobic condition showed higher dye photodegradation quantum in DMF for the various concentrations of dye used. Under aerobic condition irradiation under nitrogen atmosphere attained higher degradation whereas the presence of air reduced degradation.

Highlights

Fluorescent dyes are used in diverse fields of study such as in biochemical investigations, medical diagnoses, construction of photoelectric cells, lasers and solar batteries [1] [2]
This paper describes some significant fluorescent and photostability properties of Coumarin Disperse Yellow 82
The relative strength, reflectance and light fastness of dyed polyester for the different dye concentrations were proven to be better in comparison to dyed polyester/cotton blend

Summary

Introduction

Fluorescent dyes are used in diverse fields of study such as in biochemical investigations, medical diagnoses, construction of photoelectric cells, lasers and solar batteries [1] [2]. The application of fluorescent dyes to synthetic fibres has gained relevance in textiles regarding aesthetic and functional requirement [3]. These dyes when used on synthetic fibres produce fluorescence under solar and UV radiation. The major consumption of fluorescent dyes in textiles is for the dyeing synthetic fibres especially polyester. Disperse dyes are most fluorescent among textile dyes and most suitably used on polyesters [1] [6] [7]

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