Bulk compression creep of molten polymers has received almost no attention to-date (1) because of the commonly accepted notions that no volume changes of importance take place in polymers during actual practice, and the inherent practical difficulties related to the precise measurement of volume deformations. For this purpose an Instron Capillary Rheometer with a steel plug instead of the capillary has been used (Figure 1-a). Actual data look as these shown in Figure 1-b.


Ethylene Oxide Steady State Creep Shift Factor Creep Compliance Master Curf 
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  1. 1).
    Sanchez, M., Aleman, J.V., Rheologica Acta, 1988, 27, 634–638CrossRefGoogle Scholar
  2. 2).
    Aleman, J.V., Angew. Makrom. Chem., 1989, accepted.Google Scholar
  3. 3).
    Aleman, J.V., J. Polym. Sci. (Physics Ed.), 1990, submitted.Google Scholar
  4. 4).
    Aleman, J.V., 1990, unpublished results.Google Scholar

Copyright information

© Elsevier Science Publishers Ltd 1990

Authors and Affiliations

  • J. V. Aleman
    • 1
  1. 1.Instituto de Ciencia y Tecnologia de PolimerosMadridSpain

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