Abstract
The crystal structures of poly(hexamethylene sebacate-co-hexamethylene adipate), P(HSe-co-HA), copolymers have been studied with Fourier transformation infrared spectroscopy (FTIR) and X-ray fiber diffraction. All characteristic FTIR absorption bands of the crystals of HSe and HA comonomers are present in all copolymers, and each copolymer has only one melt temperature, which supports that P(HSe-co-HA) copolymers cocrystallize in a whole range of comonomer compositions. In addition to peak shift, some new diffraction peaks were observed in X-ray fiber diffraction patterns of the copolymers, which correspond to new crystals with different unit cells from those of the homopolymers. The crystal structures of the copolymers were analyzed, which varied with the composition of HA and HSe comonomers. Interestingly, the lattice constants c of P(HSe-co-20 mol % HA) and P(HSe-co-35 mol % HA) crystals are even larger than those of either homopolymers, which implies a new length scale may be induced in the random cop...
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.
