X-Ray Diffraction Studies of the Structure of Ordered Polymers and Related Electro-Active Materials
Final rept. 1 Nov 1987-30 Nov 1990,
DAYTON UNIV OH
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The structures of poly p-phenylenebenzobisthiazole PBZT and polyp-phenylenebenzobisoxazole PBO fibers have been determined by fiber diffraction techniques see Reprint 4 for details. D-spacings were obtained from equatorial and meridional scans recorded on a four-circle diffractometer. Intensity data were derived from x-ray rotation patterns taken on Weissenberg and vacuum cylindrical cameras. Unit cells were found to be monoclinic and non- primitive, each containing two chains per cell. The conformational torsion angle between the bisthazole and phenylene units and the orientation of chains within the unit cells were obtained from a linked-atom least-squares LALS refinement procedure.
- Polymer Chemistry