Grafting of prepared chitosan-poly(propylene) imines dendrimer hybrid as a biopolymer onto cotton and its antimicrobial property

Cotton was successfully treated by chitosan--dendrimer PPI hybrid (CS-PPI) using pad-dry-cure method. Scanning electron microscope (SEM), Fourier transform infra red (FTIR) and weight gain analysis clearly confirmed that CS-PPI was grafted on cotton through the formation of new chemical bonds. Due to the presence of CS-PPI on the surface of cotton, the weight gain of cotton was similar to 6% increased, and consequently the antimicrobial activity of the treated fabrics under optimum conditions was raised. As a worthy phenomenon, the treated cotton with CS-PPI in a concentration of 20% on the weight of the fabric was shown 100% of bacterial reduction. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.