EFFECT OF TEMPERATURE ON NYLON-6 FIBERS AT DIFFERENT DENIER VALUES AND STUDY OF MACROMOLECULAR PARAMETERS BY SAXS TECHNIQUE

Small-angle X-ray scattering (SAXS) was used to evaluate various macro molecular parameters of Nylon 6 textile fiber at denier values of 15/1 , 18/1, and 20/1 treated at different temperatures within the range of 20-63 degrees C. The theories of Kratky, Pored, Bueche, and Wendorff were applied to the densely packed two-phase system of Nylon 6, which conforms to the general micelle system. The values determined for the parameters, such as microvoid dimensions (d), the void percentage (w(1 )), the length of coherence (lc), the specific inner surface (o/v), an d the transversal lengths (l(1) and l(2)) of Nylon 6 fiber at a denier value of (15/1) at temperature 38 degrees C are 62.5 Angstrom, 0.0181 %, 480.55 Angstrom, 3.214 x 10(-6) Angstrom(-1), and 225 Angstrom and 1244 x 10(3) Angstrom, respectively. A comparative study of the above parameters at different temperatures was also made and a correlation w as established. (C) 1998 John Wiley & Sons, Inc.