Abstract
NMR was used to study the behaviour of several aromatic polyamides and polyimides over the temperature range of 77–700°K and low molecular weight compounds which simulate polymer chain fragments. Assuming that torsional vibrations of planar groups and units are the main type of molecular motion in these systems, a study was made of actual features of this type of motion and their effect on thermal and physical properties of polymers was investigated. Effects of restricting the intensity of molecular motion as a result of molecular interaction in layers of plane parallel groups are important.
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.
