Abstract
Abstract A basic study of the development of crystallinity and polymer chain orientation in melt spinning and drawing nylon-11 and nylon-12 fibers is presented. The fibers were examined using wide angle x-ray diffraction, differential scanning calorimetry and optical retardation (birefringence) measurements. Melt spun nylon-11 fibers possesses an α-triclinic structure, while melt spun nylon-12 forms a γ-structure. Orientation factors were computed from wide angle x-ray diffraction measurements. These were correlated together with birefringence as a function of spinline stress. The influence of annealing and solid state drawing on fiber structure was investigated.
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