Issue 17, 2013
From the journal:

Polymer Chemistry

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

Camille Descour,a   Timo J. J. Sciarone,a   Dario Cavallo,b   Tibor Macko,c   Mauritz Kelchtermans,d   Ilia Korobkove  and  Robbert Duchateau*a  

* Corresponding authors

a Eindhoven University of Technology, Department of Chemical, Engineering and Chemistry, Polymer Chemistry Group, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
E-mail: R.Duchateau@tue.nl
Fax: +31 40 2463966
Tel: +31 40 2474918

b Eindhoven University of Technology, Department of Mechanical Engineering, Polymer Technology Group, P.O. Box 513, 5600 MB Eindhoven, The Netherlands

c Fraunhofer Institute for Structural Durability and System Reliability LBF, Materials Analytics, Division Plastics, Schlossgartenstr. 6, 64289 Darmstadt, Germany

d ExxonMobil Chemical Europe, Hermeslaan 2, B-1831 Machelen, Belgium

e X-ray Core Facility, Faculty of Science, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada

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), 13C 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.

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

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Article information

DOI
https://doi.org/10.1039/C3PY00506B
Article type
Paper
Submitted
19 Apr 2013
Accepted
05 Jun 2013
First published
06 Jun 2013

Polym. Chem., 2013,4, 4718-4729

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

C. Descour, T. J. J. Sciarone, D. Cavallo, T. Macko, M. Kelchtermans, I. Korobkov and R. Duchateau, Polym. Chem., 2013, 4, 4718 DOI: 10.1039/C3PY00506B

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