New Environment-Friendly Approach for Textile Printing Using Natural Dye Loaded Chitosan Nanoparticles

Abstract

N the current work we present radially new approach for sustainable textile colouration. The approach involves loading of a natural dye such as Red Poppy dye, on a biopolymer like chitosan after being reinvented to chitosan nanoparticles through ionic gelation with sodium tripolyphosphate. Thus obtained coloured particles are used in printing of ramie fabrics. TEM shows that unloaded chitosan nanoparticles (8-20nm) have a very homogeneous morphology with quite uniform particle size distribution while dye loading causes increased size (100 -150 nm) and multi-shape formation.