The Crystal Structure of Poly(ethylene furanoate)

Yimin Mao, Robert Kriegel, David Bucknall

Research output: Contribution to journalArticle

27 Citations (Scopus)
193 Downloads (Pure)

Abstract

The crystal structure of poly(ethylene furanoate) (PEF) has been determined using X-ray fiber diffraction (XRFD) combined with molecular modeling. Analysis of the XRFD data suggested the space group was P21, with a monoclinic unit cell where a = 5.784 Å, b = 6.780 Å, c = 20.296 Å, and γ = 103.3 o, giving a calculated unit cell density of the crystal phase was 1.562 g/cm3. The repeating unit consisted of two monomers related to each other by a 21 screw axis. It was also shown that two PEF chains were included in each unit cell, with the center-chain being staggered with respect to the edge-chain. Polymer chains were found to be near planar, although careful evaluation showed that the best fit with the data required the cell to contain a mixture of 3/12 and 5/12 center-chain-staggering.
Original languageEnglish
Pages (from-to)308-314
Number of pages7
JournalPolymer
Volume102
Early online date16 Aug 2016
DOIs
Publication statusPublished - 12 Oct 2016

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