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  4. Exploration of the effect of 2,6-(t-Bu)(2)-4-Me-C6H2OH (BHT) in chain shuttling polymerization
 
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2013
Journal Article
Title

Exploration of the effect of 2,6-(t-Bu)(2)-4-Me-C6H2OH (BHT) in chain shuttling polymerization

Abstract
The interactions of a sterically hindered phenol [2,6(t-Bu)(2)-4-Me-C6H2OH] (BHT) with the scavenger MAO (AlR3) and ZnR2 during Hf/Zr-based chain shuttling polymerization in a semi-batch reactor have been investigated. NMR model studies indicated preferential binding of BHT to aluminum under these conditions. Subsequently, reproducible polymerization runs gave rise to copolymers that were thoroughly characterized by HT-SEC, HT-HPLC, DSC, thermal fractionation (SSA), C-13 NMR, density measurements, CRYSTAF and optical microscopy to unravel their complex microstructures. The obtained materials differ from a simple solution blend of materials, separately produced by single catalysts, but also from multi-block copolymers as obtained by DOW's continuous process, although a blocky structure can be rationalized.
Author(s)
Descour, Camille
Eidhoven University of Technology
Sciarone, Timo J.J.
Eidhoven University of Technology
Cavallo, Dario
Eidhoven University of Technology
Macko, Tibor  
Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF  
Kelchtermans, Mauritz
ExxonMobile Chemical Europe
Korobkov, Ilia
University of Ottawa
Duchateau, Robbert
Eidhoven University of Technology
Journal
Polymer chemistry  
DOI
10.1039/c3py00506b
Language
English
Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF  
Keyword(s)
  • 2,6-(t-Bu)(2)-4-Me-C6H2OH (BHT)

  • chain shuttling polymerization

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