Graft Polymerization of Acrylamide onto Cotton Fabric for Further Treatments

Abstract

Effects of variables in the graft polymerization of acrylamide onto cotton fabric using ceric ammonium nitrate as catalyst have been investigated. Trials to impart a durable creaseproofing effect to the polyacrylamide-grafted fabric by the incorporation of cross-links between graft chains of different cellulose molecules by means of a methylene-bisamide linkage (-CONHCH₂HNOC-) have been made. A sharp maxi mum is found in the values of the apparent amount of grafting plotted against the pH values of treating solutions; correlations of effects of these variables with the mechanism of polymerization are described. Data are presented to explain the formation of a chemical bond between cellulose and polyacrylamide by means of solubility character istics in cuprammonium solution. Data on durability to acid extraction and alkaline laundering, as well as on mechanical properties of the aftertreated fabrics, the most excellent of which is obtained by the acid-cure of methylolated polyacrylamide-grafted fabric alone, or particularly with adipamide, are also given.