Small angle X‐ray scattering investigations on cold‐drawn nylon 6

Abstract

Small angle X-ray scattering (SAXS) on cold-stretched nylon 6 supports the model of fully extended chains as a consequence of mechanical deformation. There is no evidence for the persistence of lamellar fragments. The ordered zones present before cold-stretching exhibit a dimension of 4,7 nm and those formed after cold-stretching and annealing one of 6,3 nm in fibre direction. The long period of the as-extruded samples is 11,5 nm, and that of the coldstretched and annealed samples is 8,3 nm. The reduction of the long period and the increase of particle dimensions in the annealed samples support the hypothesis that a new lamellar system is formed.

Evidence for the development of a one-dimensional array of crystallites in stretched polyaniline and the effect of chloride ion doping

“…For comparison, the dimensions for the crystallites are similar to those obtained from the SAXS analysis of drawn polypropylene121* and Nylon 6. 15 The diameter compares well with the 5-nm value obtained by Pouget et al16 by wide-angle scattering from an emeraldine film with a draw ratio of 3. However, a value of 15 nm was obtained for the dimension parallel to the draw axis in that work.…”