Thermoresponsive Poly(2-oxazine)s
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Bloksma, Meta M.; Paulus, Renzo M.; van Kuringen, Huub P. C.; van der Woerdt, Friso S.; Lambermont-Thijs, Hanneke M. L.; Schubert, Ulrich S.; Hoogenboom, Richard
- Abstract:
- The monomers 2-methyl-2-oxazine (MeOZI), 2-ethyl-2-oxazine (EtOZI), and 2- n -propyl-2-
oxazine ( n PropOZI) were synthesized and polymerized via the living cationic ring-opening
poly merization (CROP) under microwave-assisted conditions. pEtOZI and p n PropOZI were
found to be thermoresponsive, exhibiting LCST behavior in water and their cloud point temperatures
( T CP ) are lower than for poly(2-oxazoline)s with similar side chains. However, comparison
of poly(2-oxazine) and poly(2-oxazoline)s isomers reveals that poly(2-oxazine)s are
more water soluble, indicating that the side chain has a stronger impact on polymer solubility
than the main chain. In conclusion, variations
of both the side chains and the
main chains of the poly(cyclic imino
ether)s resulted in a series of distinct
homopolymers with tunable T(CP).
- Year:
- 2012
- Type of Publication:
- Article
- Journal:
- Macromolecular Rapid Communications
- Volume:
- 33
- Pages:
- 92 - 96