Journal of thermal analysis

, Volume 49, Issue 1, pp 201–208 | Cite as

Thermal analysis of Vectran® fibers and films

  • J. D. Menczel
  • G. L. Collins
  • S. K. Saw


Vectra® liquid crystalline polymers (LCP's) were introduced as commercial products in the mid-1980's. The first of these (Vectra A130) was a wholly aromatic thermotropic copolyester ofp-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid. Vectra A130 is a thermotropic LCP that can be melt spun into filaments that on heat treatment are characterized by high strength and high modulus. Vectra resin can also be extruded into films. In the fiber or film form this material is commercially known as Vectran®. Heat treatment enhances the tensile strength of Vectran fiber variants. Because of this, the elucidation of the physical transformations taking place in the internal structure of the material during heating has always been an important subject. Several thermal techniques are used to indicate clearly that what is observed as a “glass transition” is unlike the conventional glass transition in typical semicrystalline polymers. There is also an indication of the presence of multiple states of mesophase aggregation that collapse into a single state when taken to high enough temperatures.


liquid crystalline polymers Vectran® fibers and films 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    M.-Y. Cao and B. Wunderlich, J. Polym. Sci., Polym. Phys. Ed., 521 (1985) 23.Google Scholar
  2. 2.
    S. Z. D. Cheng, Macromolecules, 2475 (1985) 21.Google Scholar
  3. 3.
    M.-Y. Cao, M. Varma-Nair and B. Wunderlich, Polymers for Advanced Tech., 1 (1990) 151.CrossRefGoogle Scholar
  4. 4.
    M. Varma-Nair, A. Habenschuss and B. Wunderlich, Proc. 22nd NATAS, Atlanta 1992, p. 343.Google Scholar
  5. 5.
    H. N. Yoon and M. Jaffe, Abstract of Papers, ANYL-72, 185th American Chemical Society National Meeting, March 20–25, Seattle, Washington 1983.Google Scholar
  6. 6.
    M. Takayanagi, “Molecular Motions in Crystalline Polymers” in “Molecular Basis of Transitions and Relaxations”, ed. by D.J. Meier, Gordon and Breach, New York 1978.Google Scholar
  7. 7.
    G. Collins and B. Long, J. Appl. Polym. Sci., 53 (1994) 587.CrossRefGoogle Scholar
  8. 8.
    M. J. Troughton, A. P. Unwin, G. R. Davies and I. M. Ward, Polymer, 29 (1988) 1389.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • J. D. Menczel
    • 1
  • G. L. Collins
    • 1
  • S. K. Saw
    • 1
  1. 1.Hoechst Celanese Corporate Research and TechnologySummitUSA

Personalised recommendations