The Orientation of the Structure of 6.6 Nylon Fibres

The optical and x-ray diffraction properties of a model fibre have been considered. The fibre is assumed to consist of an assemblage of structural units to which simple optical and crystalline properties have been assigned. It is further assumed that the random orientation of units in the undrawn fibre is modified by drawing according to a simple geometrical pattern. Good agreement has been found between the observed variation of the birefringence with drawing, and the variation calculated from the model, and between some of the observed changes with drawing of the x-ray diffraction pattern, and the corresponding changes shown by the model.