One-Pot Synthesis of 2-Phenyl-2-oxazoline-Containing Quasi-Diblock Copoly(2-oxazoline)s under Microwave Irradiation
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Hoogenboom, Richard; Thijs, Hanneke M. L.; Fijten, Martin W. M.; van Lankvelt, Bart M.; Schubert, Ulrich S.
- Abstract:
- The microwave-assisted statistical copolymerization of 2-phenyl-2-oxazoline
with 2-methyl-2-oxazoline or 2-ethyl-2-oxazoline is discussed in this contribution.
Kinetic studies of these statistical copolymerizations as well as reactivity ratio determinations
were performed to investigate the monomer distribution in these copoly(2-
oxazoline)s, demonstrating the formation of quasi-diblock copolymers. In addition, the
synthesis of copolymer series with monomer concentrations ranging from 0 to 100 mol %
is described. These copolymer series were characterized with 1H NMR spectroscopy,
gas chromatography, and gel permeation chromatography. Moreover, the glass-transition
temperatures and solubility of these copolymers were studied, and this revealing
better mixing of poly(2-methyl-2-oxazoline) (pMeOx) with poly(2-phenyl-2-oxazoline)
(pPhOx) than poly(2-ethyl-2-oxazoline) (pEtOx) with poly(2-phenyl-2-oxazoline) (pPhOx).
- Year:
- 2007
- Type of Publication:
- Article
- Keywords:
- cationic ring-opening polymerization; living polymerization; microwave
- Journal:
- Journal of Polymer Science: Part A: Polymer Chemistry
- Volume:
- 45
- Pages:
- 416 - 422