Crystallinity and Orientation of Copolyester Fibers

DOI

Bibliographic Information

Other Title
  • 共重合ポリエステル繊維の結晶性と配向性

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Description

Polyethylene terephthalate adipate (PET/PEA), polyethylene terephthalate sebacate (PET/PES), and polyethylene terephthalate isophthalate (PET/PEI) copolymers containing more than 90 mole-percent polyethylene terephthalate (PET) were prepared. The effect of foreign monomer units on the physical properties of these copolymers was discussed.<BR>(a) Changes in Tm and T0 of these copolymers show the best fit to Flory's and Gordon-Taylor's equations, which take into account of random copolymers.<BR>(b) In copolyester fibers, the crystal of PET is unable to include foreign monomer units in it.<BR>(c) The fibers scarcely contain voids of linear dimensions ranging from 20 to 300 Å, which voids would make X-ray diffraction patterns diffuse.<BR>(d) For PET/PEA and PET/PES, with increasing proportion of the foreign monomer units, decreasing of crystallinity and increasing of dyeability are affected much greater than in the case of PET/PEI.<BR>For PET/PES fibers, the shortening of a long period was also observed.<BR>(e) In drawn fibers, reduction in the degree of orientation with copolymerization was generally observed while the degree of crystalline orientation was almost unaltered.

Journal

  • Kobunshi Kagaku

    Kobunshi Kagaku 21 (236), 729-736, 1964

    The Society of Polymer Science, Japan

Details 詳細情報について

  • CRID
    1390282681496222592
  • NII Article ID
    130004032494
  • DOI
    10.1295/koron1944.21.729
  • ISSN
    18848079
    00232556
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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