Abstract
Polyamide fabrics and filaments (Nylon 6 and Nylon 66) are radiation-grafted with varied initial concentration of an unsaturated monomer, vinyl pyrrolidone (VP), to give varied add-ons under the influence of different doses of 60Co γ-rays. Remarkable improvement in the moisture regain of the above mentioned grafted polyamides is obtained almost equaling that of cotton in case of Nylon 66 (7.58) and surpassing it with Nylon 6 (9.58). This desirable modification transforming the treated polyamides from hydrophobic to hydropilic substrates should contribute considerably to more comfortable synthetics, better performance towards wet processes, and improved static dissipation. This change could be related to the combined characteristics of poly (vinyl pyrrolidone) and the polyamides as copolymers. Parameters investigated during this work are radiation dose (1.62–4 Mrad at dose rates of 73–97 rad s), and initial monomer concentration. Textile moisture regain evaluations are reported.
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