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Low Tc growth transitions in isotactic polypropylene: β to α and α to smectic phases

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Summary

Two growth transitions are observed by optical microscopy in the low Tc range (105–80°C) of isotactic polypropylene (iPP): β to α and α to (probably) smectic phases. These transitions (notably β to α) may be the cause of the complicated annealing and recrystallization behaviour of β iPP, which is known to depend on the initial crystallization and post-crystallization thermal history.

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Authors and Affiliations

  1. Institut Charles Sadron (CRM-EAHP), CNRS-ULP, 6 rue Boussingault, F-67083, Strasbourg Cédex, France

    Bernard Lotz, Bertrand Fillon, Annette Thierry & Jean-Claude Wittmann

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  1. Bernard Lotz
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  2. Bertrand Fillon
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  3. Annette Thierry
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  4. Jean-Claude Wittmann
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Lotz, B., Fillon, B., Thierry, A. et al. Low Tc growth transitions in isotactic polypropylene: β to α and α to smectic phases. Polymer Bulletin 25, 101–105 (1991). https://doi.org/10.1007/BF00338906

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  • DOI: https://doi.org/10.1007/BF00338906

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