Reducing the Degree of Branching in Polyacrylates via Midchain Radical Patching: A Quantitative Melt-State NMR Study

Reducing the Degree of Branching in Polyacrylates via Midchain Radical Patching: A Quantitative Melt-State NMR Study

Mid-chain radicals play a key role in the radical polymerization of acrylates. Quantitative melt-state NMR has been used for the first time in a kinetic study quantifying the degree of branching in polyacrylates. It was shown that thiols readily react with mid-chain radicals (and not only secondary...

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Veröffentlicht in:Macromolecules 2010-07, Vol.43 (13), p.5492-5495
Hauptverfasser: Gaborieau, Marianne, Koo, Sandy P. S, Castignolles, Patrice, Junkers, Tanja, Barner-Kowollik, Christopher
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Chemical Sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymers
Properties and characterization
Structure, morphology and analysis
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Zusammenfassung:Mid-chain radicals play a key role in the radical polymerization of acrylates. Quantitative melt-state NMR has been used for the first time in a kinetic study quantifying the degree of branching in polyacrylates. It was shown that thiols readily react with mid-chain radicals (and not only secondary propagating radicals) to form linear polymers thus effectively "patching" them.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma100991c