Polyacrylonitrile (PAN) Crystal Structure: Amorphous and Semi-Crystalline Forms

Yes, polyacrylonitrile (PAN) has a crystal structure. PAN can exist in both amorphous and semi-crystalline forms depending on its processing conditions. The semi-crystalline form of PAN has a repeating unit cell structure with a crystalline region and an amorphous region. The crystal structure of PAN is affected by factors such as the degree of polymerization, the molecular weight distribution, and the processing conditions.