Condensed Mode Cooling for Ethylene Polymerization: Part III. The Impact of Induced Condensing Agents on Particle Morphology and Polymer Properties

Montree Namkajorn, Arash Alizadeh, Dario Romano, Sanjay Rastogi, Timothy F. L. McKenna*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


The presence of different commonly used induced condensing agents (icas) in the gas phase polymerization of ethylene on the supported catalyst has a significant impact on the crystallinity and the molecular weight distribution of the resulting high density polyethylene. The crystallinity of the polymer is found to be higher in the presence of vaporized n-pentane or n-hexane, than in “dry mode” (i.e., with no ica). This is primarily attributed to the mechanism of crystallization of polymer chains in presence of the solubilized ica which might act to promote solvent vapor annealing. In addition, vaporized ica also provokes a significant increase in the weight average molecular weight, with values being estimated at over one million.
Original languageEnglish
Pages (from-to)1521-1528
JournalMacromolecular Chemistry and Physics
Issue number13
Publication statusPublished - Jul 2016


  • ethylene polymerization
  • induced condensing agent
  • semi-crystalline polymer
  • sorption
  • supported catalyst

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