How Chain Transfer Leads to a Uniform Polymer Particle Morphology and Prevents Reactor Fouling - Publication - Bridge of Knowledge

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How Chain Transfer Leads to a Uniform Polymer Particle Morphology and Prevents Reactor Fouling

Abstract

ABSTRACT: The effect of adding diethyl zinc as a chain transfer agent during the polymerization of propylene in heptane performed at 80 °C was studied. Although it was expected that the chain transfer would stop after precipitation of the polymer, the polymer molecular weight continued to increase throughout the whole of the polymerization. The presence of diethyl zinc had an additional effect that the polymerizations were devoid of reactor fouling. To unravel this phenomenon, the polymer particle morphology was studied. Under the conditions applied, surprisingly, uniform platelet-shaped polymer particles were formed. At high polymer content, these particles aggregate into microfibrillar structures consisting of nematic columnar strands of the same uniform platelets. The polymer particle morphology, as a result of controlled crystallization, is believed to play a crucial role in preventing reactor fouling.

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Copyright (2021 American Chemical Society)

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
MACROMOLECULES no. 54, pages 696 - 702,
ISSN: 0024-9297
Language:
English
Publication year:
2021
Bibliographic description:
Jasińska-Walc L., Duchateau R., Bouyahyi M., Aarts J., Syed A., Delsman E.: How Chain Transfer Leads to a Uniform Polymer Particle Morphology and Prevents Reactor Fouling// MACROMOLECULES -Vol. 54,iss. 2 (2021), s.696-702
DOI:
Digital Object Identifier (open in new tab) 10.1021/acs.macromol.0c02307
Verified by:
Gdańsk University of Technology

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