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Zeng XB, Ungar G, Spells SJ, et al. Crystal-amorphous polymer interface studied by neutron and x-ray scattering on labeled binary ultralong alkanes. Phys Rev Lett. 2003;90(15):155508doi: 10.1103/PhysRevLett.90.155508.
Zeng, X. B., Ungar, G., Spells, S. J., Brooke, G. M., Farren, C., & Harden, A. (2003). Crystal-amorphous polymer interface studied by neutron and x-ray scattering on labeled binary ultralong alkanes. Physical review letters, 90(15), 155508. https://doi.org/10.1103/PhysRevLett.90.155508
Zeng, X B, et al. "Crystal-amorphous polymer interface studied by neutron and x-ray scattering on labeled binary ultralong alkanes." Physical review letters vol. 90,15 (2003): 155508. doi: https://doi.org/10.1103/PhysRevLett.90.155508
Zeng XB, Ungar G, Spells SJ, Brooke GM, Farren C, Harden A. Crystal-amorphous polymer interface studied by neutron and x-ray scattering on labeled binary ultralong alkanes. Phys Rev Lett. 2003 Apr 18;90(15):155508. doi: 10.1103/PhysRevLett.90.155508. Epub 2003 Apr 18. PMID: 12732051.
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Phys Rev Lett. 2003 Apr 18;90(15):155508. doi: 10.1103/PhysRevLett.90.155508. Epub 2003 Apr 18.

Crystal-amorphous polymer interface studied by neutron and x-ray scattering on labeled binary ultralong alkanes.

Physical review letters

X B Zeng, G Ungar, S J Spells, G M Brooke, C Farren, A Harden

Affiliations

  1. Department of Engineering Materials, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom.

PMID: 12732051 DOI: 10.1103/PhysRevLett.90.155508

Abstract

The recently discovered stable semicrystalline phase in binary ultralong alkanes is studied by small-angle neutron and x-ray scattering. Either the shorter or the longer alkane has (CD2)11CD3 ends. It is confirmed that chains are tilted in the crystal layer and found that ca. seven end carbons of the shorter alkane are amorphous. It is also established that the longer chains protrude from the crystal at both ends and that their end groups are preferentially located in the middle of the amorphous layer, suggesting gradual dissipation of orientational order of the chains exiting the crystal.

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