Eco-Friendly Multifinishing of cotton through Inclusion of Motmorillonite/chitosan Hybrid Nanocomposite

摘要

Natural resources were used in synthesis of innovative hybrid nanocomposites for cotton multifinishing. The innovation is based on interaction of natural nanoclay and a biopolymer under the name montmorillonite (MMT) and chitosan (CTS) respectively. Thus aqueous slurry was prepared containing (MMT) and (CTS) along with citric acid and sodium hypophosphite. The slurry was sonicated to yield MMT/CTS hybrid nanocomposite. Different nanocomposites could be achieved through variation of concentration of both MMT and CTS as well duration of sonication. The as prepared MMT/CTS hybrid nanocomposites were completely homogeneous and remained stable for more than a month provided that the sonication is performed for at least 90 min. The hybrid nanocomposites were characterized using SEM, FTIR, TGA, X-ray diffraction and TEM analysis. To this end, the hybrid was applied to cotton fabric as per the pad-dry-cure method. Interaction of the newly synthesized MMT/CTS hybrid nanocomposites with cotton cellulose (Fabric) brought about, therein, inclusions of the nanohybrid. The impact of this was to impart to cotton fabric antimicrobial activity, easy care characteristics, thermal stability and reduced inflammability. Meanwhile, such inclusions increase substantially the tensile strength and elongation at break of the fabric. Dependence of the add-on and nitrogen content as a measure of the magnitude of the nanohybrid inclusions in the fabric is also reported.