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The Effect of Temperature on the Living Cationic Polymerization of 2-Phenyl-2-oxazoline Explored Utilizing an Automated Synthesizer

✍ Scribed by Richard Hoogenboom; Martin W. M. Fijten; Ulrich S. Schubert

Publisher: John Wiley and Sons
Year: 2004
Tongue: English
Weight: 231 KB
Volume: 25
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.200300233

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✦ Synopsis

Abstract

Summary: The temperature dependency of the polymerization of 2‐phenyl‐2‐oxazoline was investigated utilizing a commercially available automated synthesizer equipped with individually heatable reactors. Kinetic investigations resulted in an optimal polymerization temperature and activation energy determination for the polymerizations initiated with methyl tosylate. Moreover, the in situ generation of benzyl iodide (more reactive initiator) from benzyl chloride and sodium iodide is described, whereby solid sodium iodide was automatically dosed into the reactors.

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## Abstract Sixteen parallel polymerization reactions of 2‐ethyl‐2‐oxazoline have been performed at different temperatures in an automated synthesizer that allowed individual heating of each reactor. During the reactions samples were taken automatically, which were characterized by means of both on