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Journal of Materials Science

, Volume 26, Issue 9, pp 2365–2371 | Cite as

Microstructure and mechanical properties ofin-situ network composite fibres of PBZT with nylon

  • C. R. Hwang
  • M. F. Malone
  • R. J. Farris
  • D. C. Martin
  • E. L. Thomas
Papers

Abstract

A method for preparing composite fibres by infiltrating nylon into swollen poly(p-phenylene benzobisthiazole) (PBZT) fibre is described. PBZT fibre forms a microfibrillar network structure during the coagulation process.In-situ network composite (IC) fibres may be prepared by exchanging the coagulant with a solution containing the desired matrix material. These new composite fibres exhibit nearly identical mechanical properties and similar thermomechanical properties to those of so-called molecular composite (MC) fibres prepared from isotropic solutions of PBZT and nylon in methane sulphonic acid (MSA), The mechanical properties of these fibres were determined before and after heat treatment under tension. The structure of pure PBZT and its composite fibres (ICs' and MCs') were characterized using nitrogen adsorption (Brunauer-Emmett-Teller (BET) experiments), small-angle X-ray scattering, and scanning and transmission electron microscopy (SEM and TEM, respectively). The structure of both composite fibres was found to be a microfibrillar network of PBZT in a matrix of amorphous nylon. The average diameters of the PBZT microfibrils were in the range of 10 to 20 nm forin-situ network composites and approximately 4 nm for molecular composites.

Keywords

Transmission Electron Microscopy Heat Treatment Nylon Sulphonic Acid Nitrogen Adsorption 
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.

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References

  1. 1.
    W.-F. Hwang, D. R. Wiff, C. L. Benner andT. E. Helminiak,J. Macromol. Sci.-Phys. B22 (1983) 231.Google Scholar
  2. 2.
    W.-F. Hwang, D. R. Wiff, C. Verschoore, G. E. Price, T. E. Helminiak andW. W. Adams,Polym. Engng. Sci. 23 (1983) 789.Google Scholar
  3. 3.
    W.-F. Hwang, D. R. Wiff, T. E. Helminiak andW. W. Adams,ACS Div. Org. Coat. Plast. Chem. Preps. 48 (1982) 929.Google Scholar
  4. 4.
    H. H. Chuah, T. Kyu andT. E. Helminiak,Polym. Mater. Sci. Engng. 56 (1987) 58.Google Scholar
  5. 5.
    C. R. Hwang, M. F. Malone andR. J. Farris,J. Mater. Sci. 26 (1991) 1762.Google Scholar
  6. 6.
    Idem., Paper Number C02.30, Conference on Emerging Technologies in Materials (AIChE, Minnesota, 1987).Google Scholar
  7. 7.
    S. M. Wickliffe, M. F. Malone andR. J. Farris,J. Appl. Polym. Sci. 34 (1987) 931.Google Scholar
  8. 8.
    C. A. Gabriel, PhD thesis, University of Massachusetts, Amherst (1987).Google Scholar
  9. 9.
    Y. Cohen andE. L. Thomas,Polym. Engng. Sci. 25 (1985) 1093.Google Scholar
  10. 10.
    Idem., Macromol. 21 (1988) 433.Google Scholar
  11. 11.
    Idem., ibid. 21 (1988) 436.Google Scholar
  12. 12.
    L. A. Pottick andR. J. Farris,TAPPI Proceedings: 1985 Non Woven Symposium 85 (1985) 65.Google Scholar
  13. 13.
    S. J. DeTeresa, Y. Cohen andR. J. Farris, UK Patent, GB 2195672 A (1988).Google Scholar
  14. 14.
    S. R. Allen, PhD thesis, University of Massachusetts, Amherst (1983).Google Scholar
  15. 15.
    Idem., J. Mater. Sci. 22 (1987) 853.Google Scholar
  16. 16.
    L. C. Sawyer andD. T. Grubb, in “Polymer Microscopy” (Chapman and Hall, New York, 1987) p. 85.Google Scholar
  17. 17.
    S. Brunauer, in “The Adsorption of gases and vapors” (Princeton University Press, Princeton, N.J., 1945) p. 41.Google Scholar
  18. 18.
    O. A. Nehme, C. A. Gabriel, R. J. Farris, E. L. Thomas andM. F. Malone,J. Appl. Polym. Sci. 35 (1988) 1965.Google Scholar
  19. 19.
    C. R. Hwang, PhD Dissertation, The University of Massachusetts at Amherst (1989).Google Scholar

Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • C. R. Hwang
    • 1
  • M. F. Malone
    • 1
  • R. J. Farris
    • 1
    • 2
  • D. C. Martin
    • 1
    • 2
  • E. L. Thomas
    • 1
    • 2
  1. 1.Chemical Engineering DepartmentUniversity of MassachusettsAmherstUSA
  2. 2.Polymer Science and Engineering DepartmentUniversity of MassachusettsAmherstUSA

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