Crystalline Structure of Pan—Based Fibers

A FCC-model of PAN-based fibers crystalline structure is offered, the X-ray density of polymer PAN-fibers is calculated. The system of hydrogen bonds supporting the special structure is identified by analyzing position of separate atoms. Computerezed processing of diffraction spectral data allowed to study the initial stage of fiber structure modification which is mainly accounted for by the upset of regular special structure caused by the rupture of hydrogen bonds.