Microwave-Assisted Synthesis of a 42-Membered Library of Diblock Copoly(2-oxazoline)s and Chain-Extended Homo Poly(2-oxazoline)s and Their Thermal Characterization

Wiesbrock, Frank; Hoogenboom, Richard; Leenen, Mark A. M.; van Nispen, Sjoerd F. G. M.; van der Loop, Michel; Abeln, Caroline H.; van den Berg, Antje M. J.; Schubert, Ulrich S.

Abstract:

A library of 4 chain-extended homo- and 12 diblock copoly(2-oxazoline)s was prepared from 2-methyl-, 2-ethyl-, 2-nonyl-, and 2-phenyl-2-oxazoline within less than a day (total net reaction time). The living cationic ring-opening polymerization was initiated by methyl tosylate and performed in acetonitrile at 140 °C in a single-mode microwave reactor. A total number of 100 (50 + 50) monomer units was incorporated into the respective polymer chains; the thus-obtained 16 polymers exhibited narrow average molecular weight distributions (PDI

Year:

2005

Type of Publication:

Article

Journal:

Macromolecules

Volume:

38

Pages:

7957 - 7966