Investigation of the Living Cationic Ring-Opening Polymerization of 2-Methyl-, 2-Ethyl-, 2-Nonyl-, and 2-Phenyl-2-oxazoline in a Single-Mode Microwave Reactor
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Wiesbrock, Frank; Hoogenboom, Richard; Leenen, Mark A. M.; Meier, Michael; Schubert, Ulrich S.
- Abstract:
- The living cationic ring-opening polymerizations of 2-methyl-, 2-ethyl-, 2-nonyl-, and
2-phenyl-2-oxazoline were performed in acetonitrile at high temperatures of up to 200 °C in a singlemode
microwave reactor. Upon enhancing the reaction rates by factors of up to 400 in the range from 80
to 200 °C, the first-order kinetics of the monomer consumption and the livingness of the polymerization
were maintained. As a consequence of the fast, direct, and noncontact heating by the microwave irradiation,
the polymerizations could be carried out in highly concentrated solutions or even from bulk conditions,
yielding well-defined polymers (PDI
- Year:
- 2005
- Type of Publication:
- Article
- Journal:
- Macromolecules
- Volume:
- 38
- Pages:
- 5025 - 5034