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Stress-Temperature Behavior of Stretched Trans-Polyisoprene Networks in the Crystallization Region

  • Der Gun Chou
  • K. J. SmithJr.

Abstract

Stretched networks of trans-polyisoprene (or gutta percha) exhibit interesting stress-temperature profiles as temperature passes through the crystallization zone.1 Upon cooling, stress turns sharply downward, then climbs back to a high level as temperature continues to fall, Subsequent reheating causes the stress to fall precipitously to a negative value, then after an interval of several degrees ascend steeply back into the positive domain as melting is completed. It is generally believed that the heating phase of the cycle produces a stress-temperature profile more indicative of equilibrium conditions.

Keywords

Secondary Nucleation Valley Width Dicumyl Peroxide Positive Domain Amorphous Network 
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.
    A.N. Gent, J. Polymer Sci., A2(4) 447 (1966).Google Scholar
  2. 2.
    K.J. Smith, J. Polymer Sci., 21, 45 (1983).Google Scholar
  3. 3.
    K.J. Smith, J. Polymer Sci., 21, 55 (1983).Google Scholar
  4. 4.
    K.J. Smith, ACS Syposium Series 193 Elastomers and Rubber Elasticity J. Mark and J. Lal, Eds., 1982.Google Scholar
  5. 5.
    L. Mandelkern, F. Quinn, and D. Roberts, J. Am. Chem. Soc., 78, 926 (1956).CrossRefGoogle Scholar
  6. 6.
    C.W. Bunn, Proc. Roy. Soc. (London), A180, 40 (1942).ADSCrossRefGoogle Scholar
  7. 7.
    D. Fisher, Proc. Roy. Soc. (London), B66, 7 (1953).ADSGoogle Scholar
  8. 8.
    A. Britton, J. Sullivan, and K. J. Smith, J. Polymer Sci., 17, 1281 (1979).Google Scholar
  9. 9.
    W. Cooper and G. Vaughan, Polymer, 4, 329 (1963).CrossRefGoogle Scholar
  10. 10.
    S. Mukherji and A. Woodward, J. Polymer Sci., 22, 793 (1984).Google Scholar
  11. 11.
    P. J. Flory, J. Chem., Phys., 15, 397 (1947).ADSCrossRefGoogle Scholar
  12. 12.
    Y. Takahashi, T. Sato, and H. Tadokoro, J. Polymer Sci. (Phys.), 11, 233 (1973).Google Scholar
  13. 13.
    E.G. Lowering and D.C. Wooden, J. Polymer Sci., A2 7, 1639 (1969).Google Scholar

Copyright information

© Springer Science+Business Media New York 1986

Authors and Affiliations

  • Der Gun Chou
    • 1
  • K. J. SmithJr.
    • 1
  1. 1.Department of ChemistrySUNY College of Environmental Science and ForestrySyracuseUSA

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