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Title: Condensed Mode Cooling for Ethylene Polymerization: Part III. The Impact of Induced Condensing Agents on Particle Morphology and Polymer Properties
Authors: Montree Namkajorn
Arash Alizadeh
Dario Romano
Sanjay Rastogi
Timothy F L McKenna
Mahidol University
Université de Lyon
Loughborough University
Keywords: Chemistry;Materials Science
Issue Date: 1-Jul-2016
Citation: Macromolecular Chemistry and Physics. Vol.217, No.13 (2016), 1521-1528
Abstract: © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 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. (Figure presented.) .
ISSN: 15213935
Appears in Collections:Scopus 2016-2017

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