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On the degree of crystallinity in natural rubber IV

The degree of crystallization in frozen raw rubber and stretched vulcanized rubber

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Summary

An improved X-ray technique has been worked out to determine the degree of crystallinity in natural rubber. Inaccuracies which sometimes occur in quantitative X-ray measurements were eliminated and it has been shown that the amount of crystalline rubber, both in frozen samples of raw rubber and in stretched vulcanized rubber, could be determined fairly accurately. More experiments were carried out and the results are described. These results, which confirm the current views on the problem of crystallization, point to relatively low degrees of crystallization, even in highly stretched rubber, and they agree with some other experimental evidence and with a recent theoretical investigation.

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Authors and Affiliations

  1. Laboratorium voor Technische Physica der Technische Hogeschool, Delft

    J. M. Goppel & J. J. Arlman

Authors
  1. J. M. Goppel
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  2. J. J. Arlman
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Additional information

Part I, II and III of this series can be found in Appl. sci. Res. A1 3, 18, 347.

J. M. Goppel, now at Amsterdam Laboratories of N.V. De Bataafsche Petroleum Maatschappij (Royal Dutch-Shell Group).

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Goppel, J.M., Arlman, J.J. On the degree of crystallinity in natural rubber IV. Appl. Sci. Res. 1, 462–474 (1949). https://doi.org/10.1007/BF02120347

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  • DOI: https://doi.org/10.1007/BF02120347

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