Monochlorotriazinyl-β-cyclodextrin grafting onto polyester fabrics and films

The monochlorotriazinyl-beta-cyclodextrin (MCT-beta-CD) grafting onto polyester fabrics and films was carried out in an alkaline medium (saponification conditions with Na2CO3 respectively NaOH) at different temperatures (20 and 130 degrees C) and treatment durations (30 min, 1 h, 3 h, 5 h, 24 h) through a discontinuous procedure. The saponification and grafting were accomplished in two variants: individually and simultaneously respectively. It was noticed that the alkaline medium produces chemical and superficial modifications which make possible the MCT-beta-CD grafting onto the polyester supports. This was rendered evident through FTIR analysis and SEM electron microscopy. The degree of grafting depends on the saponification/grafting conditions (the concentration of alkaline agents, time, temperature. MCT-beta-CD concentration) and is reflected by the nitrogen content, hygroscopicity, air permeability, as well as by mechanical properties (tensile breaking strength, breaking elongation, breaking mechanical work and the specific mass work). (C) 2011 Elsevier Ltd. All rights reserved.