Advertisement

Journal of Materials Science

, Volume 28, Issue 17, pp 4644–4650 | Cite as

Chemical cross-linking of cholesteric liquid-crystalline hydroxypropyl cellulose with dialdehydes

  • S. Suto
  • M. Yoshinaka
Papers

Abstract

Cross-linking of the cholesteric liquid-crystalline order in a hydroxypropyl cellulose (HPC) aqueous solution was attempted and the swelling and mechanical (static and dynamic) properties of cast films were determined. HPC solid films cast from the liquid-crystalline aqueous solution with dialdehyde (glyoxal or glutaraldehyde) and hydrochloric acid were insoluble in water and retained the right-handed cholesteric liquid-crystalline order. The swelling and static tensile properties exhibited a general behaviour with respect to the concentration of the cross-linking agent and to the heat treatment. However, dynamic and loss moduli exhibited an opposite behaviour to the static tensile modulus. A cross-linking mechanism is proposed for HPC molecules and dialdehydes based on the swelling and mechanical properties of HPC films cast from two dialdehyde systems.

Keywords

Heat Treatment Hydrochloric Acid Glutaraldehyde Tensile Property General Behaviour 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    E. T. Samulski and A. V. Tobolsky, Macromolecules 1 (1968) 555.CrossRefGoogle Scholar
  2. 2.
    A. Aviram, J. Polym. Sci. Polym. Lett. Ed. 14 (1976) 757.CrossRefGoogle Scholar
  3. 3.
    T. Mori, R. Tanaka, and T. Tanaka, Polymer 18 (1977) 1041.CrossRefGoogle Scholar
  4. 4.
    R. Kishi, M. Sisido and T. Tazuke, Macromolecules 23 (1990) 3779.CrossRefGoogle Scholar
  5. 5.
    T. G. Rials and W. G. Glasser, J. Appl. Polym. Sci. 36 (1988) 749.CrossRefGoogle Scholar
  6. 6.
    N. Yanagida and M. Matsuo, Polymer in press.Google Scholar
  7. 7.
    J. Giasson, J-F. Rovol and D. G. Gray, Macromolecules 24 (1991) 1694.CrossRefGoogle Scholar
  8. 8.
    C. Qiansong, M. H. Litt and I. M. Zloczower, J. Appl. Polym. Sci. 42 (1991) 2517.CrossRefGoogle Scholar
  9. 9.
    S. Suto, ibid. 37 (1989) 2781.CrossRefGoogle Scholar
  10. 10.
    S. Suto and H. Tashiro, Polymer 30 (1989) 2063.CrossRefGoogle Scholar
  11. 11.
    S. Suto, H. Tashiro and M. Karasawa, J. Mater. Sci. Lett. 9 (1990) 768.CrossRefGoogle Scholar
  12. 12.
    Idem 46 (1990) 561.CrossRefGoogle Scholar
  13. 13.
    Idem, J. Appl. Polym. Sci. 45 (1992) 1569.CrossRefGoogle Scholar
  14. 14.
    R. J. Samuels, J. Polym. Sci. A 2 (1969) 1179.Google Scholar
  15. 15.
    M. Matsuo and N. Yanagida, Polymer 32 (1991) 2561.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • S. Suto
    • 1
  • M. Yoshinaka
    • 1
  1. 1.Department of Polymer Chemistry, Faculty of EngineeringYamagata UniversityYamagataJapan

Personalised recommendations