Online tracing of molecular weight evolution during radical polymerization via high-resolution FlowNMR spectroscopy

High-resolution FlowNMR was coupled to a continuous flow reactor to monitor polymer molecular weight evolution online by diffusion ordered NMR spectroscopy. Polymers were synthesized by reversible addition fragmentation chain transfer polymerization in continuous flow. The setup allows to target var...

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Bibliographic Details
Published in:Polymer chemistry 2020-06, Vol.11 (21), p.3546-3550
Main Authors: Vrijsen, Jeroen H., Thomlinson, Isabel A., Levere, Martin E., Lyall, Catherine L., Davidson, Matthew G., Hintermair, Ulrich, Junkers, Tanja
Format: Article
Language:English
Subjects:
Addition polymerization
Chain transfer
Chains (polymeric)
Continuous flow
Evolution
High resolution
Molecular weight
NMR spectroscopy
Polymer chemistry
Polymerization
Polymers
Spectrum analysis
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Summary:High-resolution FlowNMR was coupled to a continuous flow reactor to monitor polymer molecular weight evolution online by diffusion ordered NMR spectroscopy. Polymers were synthesized by reversible addition fragmentation chain transfer polymerization in continuous flow. The setup allows to target various polymer chain lengths in a dynamic manner without requiring additional purification or sample preparation. Obtaining molecular weight information in this manner is shown to be more accurate than classical SEC analysis at comparable measurement times, with relative errors around 5%.
ISSN:1759-9954
1759-9962
DOI:10.1039/D0PY00475H