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Determinationof oxidation induction time and temperature bY DSC : Results of round robin tests

Schmid, M. ; Ritter, A. ; Affolter, S.

In: Journal of Thermal Analysis and Calorimetry, 2006, vol. 83, no. 2, p. 367-371

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    Title
    • Determinationof oxidation induction time and temperature bY DSC
      Results of round robin tests
    Author
    • Schmid, M.. Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
    • Ritter, A.. Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
    • Affolter, S.. University of Applied Science Buchs (NTB), Werdenbergstrasse 4, 9470, Buchs SG, Switzerland
    Document Type
    • Postprint
    Language
    • English
    Published in
    • Journal of Thermal Analysis and Calorimetry, 2006, vol. 83, no. 2, p. 367-371. Kluwer Academic Publishers
    Other Version
    OAI-PMH Identifier
    • oai:doc.rero.ch:309605
    Summary
    Results obtained from three round robin tests, performed in 1998, 2000 and 2004, are summarized and presented. Oxidation Induction Time (OITtime) and Oxidation Induction Temperature (OITtemp) on six different grades of polyethylene were measured by DSC. The measured data were collected by Empa and evaluated using a robust statistical method concerning repeatability and reproducibility standard deviation. The results of the tests indicate that the determination of OITtime is associated with a high degree of uncertainty, especially for low OITtime values. Thus, OITtemp measurements could be a valuable alternative for testing less stabilized or non-stabilized polyolefin in particular. However, OITtemp data reveal that the ability to distinguish between different polymer samples decreases drastically as OITtemp values increase