Study of Cotton Grafting with Hemiacetal - MCT-b-CD Derivative Using Fourier Transform Infrared Spectroscopy and Statistical Analysis

Abstract

The dihydrated forms of the 40% glyoxal solution undergo a dehydration process (in the presence of HCl), when the proportion of non-hydrated glyoxal increases. In the presence of a dilute ethanol solution, the non-hydrated glyoxal generates a hemiacetal. The presence of hemiacetal is confirmed by FT-IR analysis by increasing of the peaks at 1053 cm-1, 1107 cm-1 and by decreasing of the peak at 1746 cm-1. The grafting of cotton with the final grafting agent obtained from the interaction of hemiacetal with MCT-b-CD, was possible using pad-dry-cure technology. The presence of MCT-b-CD on cotton fabric was confirmed by FT-IR analysis (by the peaks of 1535 cm-1 and 787 cm-1) and by the yellowing of the sample. Confirmation of the grafting is given both by increasing the pickup / take-up degrees and by increasing the wrinkle recovery angles (WRA). The statistical analysis of these indices indicates low values for standard deviation (SD), standard error of the mean (SEM) and the coefficient of variation (CV).