Abstract
Abstract The low-temperature specific heats of polyethylene polymers with different degrees of crystallinity have been reproduced by considering a linear overlap of the contributions from both the crystalline and the amorphous phases characterizing the polymer. The excess specific heat over that provided from the Debye theory is assumed to be due to the amorphous phase and has been described by an empirical phonon-fracton density of vibrational states. A comparison between the ‘fragility’ of the amorphous fraction of the polymers and the excess specific heat has been tried. Within the range of crystallinities explored, no correlation has been found between the fragility and the density of additional low-energy vibrations.
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.
