Low-pressure rf plasma and corona decolourisation of indigo dyed denim fabrics

Abstract

This study was aimed to investigate the influence of low-pressure RF plasma (gas, treatment time and power) and atmospheric pressure corona (number of passages and power) parameters on decolourisation of indigo dyed denim fabrics. CIEL*a*b* colourimetric system was used for determination of colour difference between untreated and differently plasma treated denim fabrics. The morphology of plasma treated fibres was assessed by SEM analysis. The results showed that decolourisation was highly affected by plasma parameters and desired "worn look" effects could be designed by adequate control of plasma processing.