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Analysis of crack propagation in isotactic polypropylene with different morphology

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Physik der Duroplaste und anderer Polymerer

Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 64))

Abstract

In bulk isotactic polypropylene it is relatively easy to change the morphology of the material in a wide range, mainly by different isothermal crystallization conditions. Size, distribution and inner structure of the spherulites have a great influence on the crack propagation in this material. Due to our microscopic investigations of crack paths it seems to be significant attributing specific resistances to crack propagation to regions with different molecular structure. From the volume portions of those regions and their orientation with respect to the external load follows their share of the fracture surface; these fractions and their specific resistance values thus determine the critical crack extension force of the bulk material.

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Authors and Affiliations

  1. Institut für Werkstoffe, Ruhr-Universität, Postfach 102 148, D-4630, Bochum 1

    K. Friedrich

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  1. K. Friedrich
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E. W. Fischer F. Horst Müller R. Bonart

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© 1978 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG

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Friedrich, K. (1978). Analysis of crack propagation in isotactic polypropylene with different morphology. In: Fischer, E.W., Müller, F.H., Bonart, R. (eds) Physik der Duroplaste und anderer Polymerer. Progress in Colloid & Polymer Science, vol 64. Steinkopff. https://doi.org/10.1007/BFb0117509

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  • DOI: https://doi.org/10.1007/BFb0117509

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  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-1806-3

  • Online ISBN: 978-3-7985-1807-0

  • eBook Packages: Springer Book Archive

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