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- W1565483863 abstract "The anionic polymerization of β-propiolactone at 25°C in ethanol initiated by the betain documentclass{article}pagestyle{empty}begin{document}${rm (CH}_3 )_3 mathop {rm N}limits^ oplus - {rm CH}_{rm 2} {rm COO}^ ominus $end{document} was investigated. Macrozwitterions of the structure The kinetics of the polymerization process were investigated by IR-spectroscopy. The initiation reaction between monomer and betain is about 5 times slower than the consecutive propagation by addition of monomer to the anionic chain end. Die anionische Polymerisation von β-Propiolaction bei 25°C in Äthanol, initiiert durch das Betain documentclass{article}pagestyle{empty}begin{document}${rm (CH}_3 )_3 mathop {rm N}limits^ oplus - {rm CH}_{rm 2} {rm COO}^ ominus $end{document}, wurde untersucht. Die Polymerisationsgrade wurden absichtlich niedrig gehalten. Es entstehen Makrozwitterionen der Struktur Die Kinetik der Polymerisation wird IR-spektroskopisch untersucht. Die initiierende Reaktion des Betains mit dem Monomeren ist etwa fünfmal langsamer als das Kettenwachstum durch Addition von Monomerem an das anionische, wachsende Kettenende." @default.
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- W1565483863 date "1971-03-18" @default.
- W1565483863 modified "2023-10-17" @default.
- W1565483863 doi "https://doi.org/10.1002/macp.1971.021420118" @default.
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