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Measurement technique and data analysis of extensional viscosity for polymer melts by Sentmanat extensional rheometer (SER)

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Abstract

Transient extensional viscosity of low-density polyethylene was measured by Sentmanat extensional rheometer in combination with MCR301 rheometer (Anton Paar) at different temperatures. Issues related to the experimental procedure, namely fixing the sample and controlling the temperature, as well as correction for true sample dimensions in calculation of extensional viscosity of polymer melts, were discussed. The molecular stress function model was used to describe the experimental data. The results were in accordance with other test methods and theoretical description when the measurements were done without using the sample fixing clamps, careful temperature control was followed, and the experimental data were corrected for sample dimensions affected by thermal expansion and pre-stretching at the beginning of the test.

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Acknowledgements

J. Aho acknowledges Klaus Wollny (Anton Paar, Germany) and Mercedes Fernández San Martin (University of the Basque Country, Spain) for the technical advices and the Graduate School for Processing of Polymers and Polymer-Based Multimaterials (POPROK) and the Academy of Finland for the financial support. V. H. Rolón-Garrido and M. H. Wagner acknowledge financial support from the German Science Foundation (DFG).

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Authors and Affiliations

  1. Plastics and Elastomer Technology, Tampere University of Technology, P.O. Box 589, 33101, Tampere, Finland

    Johanna Aho & Seppo Syrjälä

  2. Chair of Polymer Engineering/Polymer Physics, Berlin Institute of Technology (TU Berlin), Fasanenstrasse 90, 10623, Berlin, Germany

    Johanna Aho, Víctor H. Rolón-Garrido & Manfred H. Wagner

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  1. Johanna Aho
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  2. Víctor H. Rolón-Garrido
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  3. Seppo Syrjälä
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  4. Manfred H. Wagner
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Correspondence to Johanna Aho.

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Aho, J., Rolón-Garrido, V.H., Syrjälä, S. et al. Measurement technique and data analysis of extensional viscosity for polymer melts by Sentmanat extensional rheometer (SER). Rheol Acta 49, 359–370 (2010). https://doi.org/10.1007/s00397-010-0439-8

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  • DOI: https://doi.org/10.1007/s00397-010-0439-8

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