Abstract
Fully aromatic copolyester with regular chain structure containing kinked monomer units were investigated by powder diffraction experiments combined with structure modelling. Temperature dependent X-ray measurements show the existence of low and high temperature solid state modifications of poly( p-phenylene isophthalate), (IPA-HQ) n. From the X-ray scattering data, d-spacings were determined taking some experimental corrections into account. Lattice parameters as well as atom coordinates of lt-(IPA-HQ) n were calculated and optimised by means of modelling procedures based on force field constrained RIETVELD algorithms. From this, a monoclinic unit cell of lt-(IPA-HQ) n with a = 0.775 nm, b = 0.567 nm, c = 2.410 nm, β = 91.8° was found considering the chemical structure as well as interactions between the particles. The (IPA-HQ) n polyester is a typical representative of this kind of polymer with kinked monomeric, and hence is useful for further structural investigations.
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.
