Controlled Synthesis, Characterization, and Flow Properties of Ethylene–Diene Copolymers

Chinmay Das*, Muhiddin Elguweri, Peijun Jiang, Shuhui Kang, Mauritz Kelchtermans, Tom C.B. McLeish, Matthew Parkinson, Daniel J. Read, Michael P. Redlich, Pradeep P. Shirodkar, Johannes M. Soulages

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The flow response of branched entangled resins is dominated by the branching topology of the constituent molecules, a property that is not directly accessible using experimental analytical tools for industrially relevant complex resins. In this paper, the controlled terpolymerization of ethylene, 1,9-decadiene, and either hexene or octene in a continuous stirred tank reactor with a metallocene catalyst, is reported. The synthesized samples are characterized extensively with various analytical tools and their rheological properties are measured with small amplitude oscillatory shear and start-up uniaxial extension experiments. A model is developed for the polymerization process with the mass balance during synthesis providing strong constraints on the rate constants. In silico ensembles of molecules, generated via Monte Carlo sampling, are used to reproduce the experimental results. The computer model allows us to infer the detailed branching structure of the molecules and to predict the optimum range of reactor conditions for this synthesis.

Original languageEnglish
Article number1800071
JournalMacromolecular Reaction Engineering
Early online date30 Jan 2019
Publication statusE-pub ahead of print - 30 Jan 2019

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© John Wiley Ltd., 2019. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.


  • flow modifier
  • long-chain branching
  • non-conjugated diene terpolymer
  • polymer synthesis
  • rheology

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