Improvement in Natural Dyeing with the Aid of Atmospheric Pr essure Plasma Treatment: A Green Solution for Leather Processing
Sudhir K. Nema.
Objective: The present study address an environment friendly solution for leather dyeing by
using at-mospheric pressure non-thermal plasma to improve natural dyeing.
Method: In this study, changes in the surface properties of goat hide is studied after exposing grain surface
of goat hide to atmospheric pressure dielectric barrier discharge generated in ammonia as discharge
producing gas. Resulting changes in the surface morphology and chemical composition of after the
plasma treatments is studied by various characterization techniques such as Fourier Transform Infrared
Spectroscopy, Scanning Electron Microscope and X-ray Photoelectron Spectroscopy. Untreated and the
plasma treated samples are dyed using three commercially available natural dyes (Eco Tiger Yellow,
Eco-Sun Yellow, Eco- Mango Yellow) and as-sessed by spectroscopic measurements to check improvement
in dyeing properties after the plasma treatment.
Result: Out of thee dyes, significant improvement in color intensity of dyed sample is observed when
plasma treated hide samples where dyed with Eco- Mango Yellow (Combination of Punica granatum &
Keywords: Plasma, atmospheric pressure, non-thermal, natural dyeing, surface modification, improvement
in color depth.
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