Two processes of α-phase formation in polypropylene at high supercooling

Jurgen E.K. Schawe, Paul A. Vermeulen, Martin van Drongelen

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)


The non-isothermal and isothermal crystallization of different types of commercial polypropylenes (PP) are investigated by fast scanning calorimetry and wide-angle X-ray scattering. Typically, PP shows two different crystallization processes: below 55 °C the mesophase formation and at higher temperatures the α-phase formation. Here we report the first observation of an additional crystallization process in some PP-types. It is observed between 45 °C and 75 °C, and is understood as a consequence of an additional nucleation of α-phase crystals.
Original languageEnglish
Pages (from-to)87-91
JournalThermochimica acta
Publication statusPublished - 2015
Externally publishedYes


  • IR-104139


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