Crystal Structure of Poly (hexamethylene 2,6-naphthalate).

DOI Web Site 参考文献17件
  • Jeong Young Gyu
    Hyperstructured Organic Materials Research Center and School of Materials Science and Engineering, Seoul National University
  • Jo Won Ho
    Hyperstructured Organic Materials Research Center and School of Materials Science and Engineering, Seoul National University
  • Lee Sang Cheol
    Department of Polymer Science and Engineering, Kumoh National University of Technology

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The crystal structure of poly(hexamethylene 2,6-naphthalate) (PHN) was identified by X-Ray diffraction and molecular modeling. The possibility of stress- or temperature-induced crystal transformation is also examined. The unit cell of PHN was found to be triclinic (P1 space group) with dimensions of a = 6.70, b = 5.66, c = 18.40 Å, α = 79.0°, β = 145.0°, γ = 90.0°, and crystal density was 1.313 g cm-3. It was assumed from the observed density (1.298 g cm-3) that the unit cell contains one repeating unit of a polymer chain. The hexamethylene unit in PHN backbone takes nearly all-trans conformation. The packing mode is of the face-to-face type relative to the naphthalene rings. The PHN polymer does not undergo crystal transformation by temperature and/or stress.

収録刊行物

  • Polymer Journal

    Polymer Journal 33 (12), 913-919, 2001

    The Society of Polymer Science, Japan

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