Synthesis, Characterization, and Cross-Linking of a Library of Statistical Copolymers Based on 2-‘‘Soy Alkyl’’-2-Oxazoline and 2-Ethyl-2-Oxazoline
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Hoogenboom, Richard; Thijs, Hanneke M. L.; Fijten, Martin W. M.; Schubert, Ulrich S.
- Abstract:
- The synthesis of statistical copolymers consisting of 2-ethyl-2-oxazoline
(EtOx) and 2-‘‘soy alkyl’’-2-oxazoline (SoyOx) via a microwave-assisted cationic ringopening
polymerization procedure is described. The majority of the resulting copolymers
revealed polydispersity indices below 1.30. The reactivity ratios (rEtOx 1.4 6 0.3;
rSoyOx ¼ 1.7 6 0.3) revealed a clustered monomer distribution throughout the polymer
chains. The thermal and surface properties of the pEtOx-stat-SoyOx copolymers
were analyzed before and after UV-curing demonstrating the decreased chain mobility
after cross-linking. In addition, the cross-linked materials showed shape-persistent
swelling upon absorption of water from the air, whereby as little as 5 mol %
SoyOx was found to provide efficient cross-linking.
- Year:
- 2007
- Type of Publication:
- Article
- Keywords:
- crosslinking; fatty acid; living polymerization; microwave irradiation; poly-2-oxazoline; renewable resources; ring-opening polymerization; soy-beans
- Journal:
- Journal of Polymer Science: Part A: Polymer Chemistry
- Volume:
- 45
- Pages:
- 5371 - 5379