In-situ and ex-situ microscopic study of gas phase propylene polymerization over a high activity TiCl4-MgCl2 heterogeneous Ziegler-Natta catalyst

V. P. Oleshko, Peter Crozier, R. D. Cantrell, A. D. Westwood

Research output: Contribution to journalArticle

22 Scopus citations


In-situ gas phase poly(propylene) (PP) formation over a high activity TiCl4-MgCl2supported Ziegler-Natta catalyst has been studied by video microscopy combined with ex-situ light microscopy, SEM, high-resolution TEM, and STEM/PEELS/EDX for the first time. In-situ observation revealed rapid formation of poly(propylene) beads 9-10 μm in size (<1/30 s) as well as growth of significant amounts of polymer within local regions. Catalyst particles containing 2-5 nm-sized MgCl2 crystalline domains are subjected to transformations during catalysis that form PP/catalyst aggregated structures of 30-50 μm in size.

Original languageEnglish (US)
Pages (from-to)34-40
Number of pages7
JournalMacromolecular Rapid Communications
Issue number1
StatePublished - Jan 24 2001


ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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