Influence of grafting on structural and optical properties of nylon-6 fibers

Abstract

This study throws light on the change of the optical properties and some structural properties due to graft copolymerization of polydiallyldimethyl ammonium chloride (PDADMAC) and polyacrylamide (PAA) of nylon-6 fibers. Multiple-beam interferometric technique in transmission was used to study the change of the diameter, refractive indices, and birefringence of nylon-6 fibers at different graft yields. The results were utilized to investigate the isotropic refractive index, the mean polarizabilities per unit volume, dielectric constant, dielectric susceptibility, and surface reflectivity for nylon-6 and grafted nylon-6 fiber. The effect of grafted PAA onto modified nylon-6 fibers containing PDADMAC on the crystallinity was studied by X-ray diffraction. These results reflect good effect of grafting on the optical and structural properties of nylon-6 fibers. The opto-thermal properties of grafted PAA with different graft yields have been studied. © 2010 Wiley Periodicals, Inc.