Plasma Grafting of Reactive Β-Cyclodextrin Onto the Cotton Fabric

Abstract

-Cyclodextrin (β-CD) is capable of forming inclusion complexes, but it cannot form a direct covalent bond with textile materials, hence some cyclodextrin derivatives have been synthesized with reactive groups to allow them to chemically bind to various substrates. In this research, the modified β-CD with itaconic acid (CDI) was grafted on to the cotton fabric by applying plasma technologies. Two methods of plasma techniques, atmospheric pressure plasma reactor (APPJ) and atmospheric pressure glow discharge (APGD) were applied for the graft treatments. The grafting copolymerization of the reactive cyclodextrin (CDI or CDI/Acrylic Acid) on the surface of cotton fabric was studied and the performance (accessibility of cyclodextrin cavities for molecular encapsulation) of -cyclodextrin fixed onto the surface cotton was evaluated. The effect of each plasma treatment method on the characteristics of the cellulosic fabric was investigated. The results showed that plasma activation was occurred on the surface of cellulose and free radicals can easily react to CDI/AA without any degradation on the polymeric chains of cellulose. The presence of anchored CD nanoparticles on the surface of the fibers was demonstrated by using SEM as well as the ability of the attached CDs to form inclusion complexes.