Microwave Accelerated Polymerization of 2-Phenyl-5,6-dihydro-4H-1,3-oxazine: Kinetics and Influence of End-Groups on Glass Transition Temperature

✍ Scribed by Sebastian Sinnwell; Helmut Ritter

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 147 KB
• Volume: 27
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200600231

✦ Synopsis

Abstract

Summary: The ring‐opening polymerizations of 2‐phenyl‐5,6‐dihydro‐4__H__‐1,3‐oxazine (PhOZI) with methyl tosylate (MeOTs) and butyl iodide (BuI) as initiators were performed in refluxing butyronitrile. Reaction kinetics under microwave irradiation was compared with conventional oil bath heating. The polymerization rates, under microwave irradiation, showed an acceleration by a factor of 1.8 (independently from the used initiator). The investigation of the thermal properties of the obtained poly(N‐benzoyl‐trimethyleneimine) showed the influence of molecular weight and end‐groups on the glass transition temperature.

The ring‐opening polymerizations of 2‐phenyl‐5,6‐dihydro‐4__H__‐1,3‐oxazine performed in refluxing butyronitrile.

magnified imageThe ring‐opening polymerizations of 2‐phenyl‐5,6‐dihydro‐4__H__‐1,3‐oxazine performed in refluxing butyronitrile.