Abstract
Abstract Fibers of PET were drawn at 80°C and investigated by small-angle x-ray scattering (SAXS) after annealing with free ends at temperatures up to 240°C. While the as-drawn fiber had no identifiable discrete SAXS pattern, evidence for an alternating two-phase microstructure was seen after annealing at 100°C. Annealing at temperatures up to 200°C resulted in well oriented SAXS patterns which doubled in integrated intensity. During this stage of (low-temperature) annealing, it is envisioned that oriented amorphous regions partially crystallize, leading to transverse growth of oriented microfibrils. Annealing at or above 225°C causes the SAXS pattern to become arced, implying disorientation of the fiber via the presence of a largely molten structure. Quenching from these highest annealing temperatures results in a slight decrease in the SAXS intensity which is attributed to the formation of thicker transition zones at the crystal-amorphous interface during rapid crystallization. By comparison to previous...
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.
