Abstract
We have developed a novel method of determining polymer fiber morphology. Analysis of pair-density functions obtained from synchrotron x-ray diffraction patterns with scattering vectors lying in the meridional direction and equatorial plane allows for the determination of crystallite dimensions, volume fractions of crystalline and amorphous phases, and the probability distribution of crystallite c axis orientation relative to the fiber axis. This method is independent of details regarding the structure of the amorphous phase, and may be successfully applied to both highly crystalline and poorly crystalline samples. Here we describe this new polymer fiber morphological analysis technique, and present examples of its application to three NOMEX aramid samples of widely differing morphologies.
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