Abstract
Highly oriented fibres made of aromatic polyimides prepared from aromatic diamines and dianhydrides of tetracarboxylic acids containing one flexible joint between benzene rings were investigated by X-ray diffraction combined with elastic deformation directly in the diffractometer. A single method based on the relationships derived by Miyazawa was employed to determine chain conformations and compliance of chains in the crystal lattice. The calculated compliance parameters agree well with values determined experimentally from the modulus of elasticity of crystal lattice deformed along the direction of polymer chains. Parameters characterizing deformation of internal rotation angles have been estimated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
