ECO-FRIENDLY DYEING OF CELLULOSE NANOFIBERS WITH REACTIVE DYE

摘要

Nanofibers have raising increasing interest for a wide class of applications due to the excellentrnproperties, ranging from life science and water treatment to energy conversion. In this studyrnresults of the cold pad batch dyeing, a well-known ecofriendly method of dyeing, of CellulosernNanofiber webs with reactive dye, CI Reactive Violet 5, by using ultrasonic and conventionalrnmethod presented. In order to prepare cellulose nanofibers, the electrospinning and subsequentrndeacetylation of cellulose acetate (CA) has been done. The color strength (K/S) and colorrnfastness of dyed cellulose nanofibers assessed. Scanning electron microscopy and Fourierrntransform infrared spectroscopy were applied to investigate morphology and chemical structurernof nanofibers respectively.rnThe results indicates that K/S value increased around 5-8% with utilizing ultrasonic method forrndyeing in same condition. In addition the samples dyed with ultrasonic show more washingrnfastness. The cellulose nanofiber in both method show nearly the same light fastness.