Effect of the structure of titanium–magnesium catalysts on the morphology of polyethylene produced

Tatiana B. Mikenas, Evgeny I. Koshevoy, Vladimir A. Zakharov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The structure and formation of polyethylene (PE) particles on supported titanium–magnesium catalysts having different structural characteristics (sizes of microcrystallites, mesopores, and subparticles) were studied for the first time. Scanning electron microscopy was used to identify structural elements of the polymer particles formed over such catalysts and to reveal morphological changes in the growing polymer particles when the yield was increased from approximately 0.2 g PE/g catalyst to approximately 13 kg PE/g catalyst. A relationship was found between structural characteristics of the porous catalyst particles, morphology of the nascent polymer particles, and bulk density of the polymer powder.

Original languageEnglish
Pages (from-to)2298-2308
Number of pages11
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume55
Issue number14
DOIs
Publication statusPublished - 15 Jul 2017

Keywords

  • catalysts
  • morphology
  • polyethylene (PE)
  • pore structure
  • scanning electron microscopy (SEM)
  • structure-property relations
  • structure–property relation
  • Ziegler-Natta polymerization
  • SUPPORTED CATALYSTS
  • PROPYLENE POLYMERIZATION
  • OLEFIN POLYMERIZATION
  • FRAGMENTATION
  • ETHYLENE POLYMERIZATION
  • POLYPROPYLENE
  • GROWTH
  • ZIEGLER-NATTA CATALYSTS
  • PARTICLE MORPHOLOGY
  • COPOLYMERIZATION
  • structure-property relation

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