期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 33, 期 1, 页码 92-96出版社
WILEY-BLACKWELL
DOI: 10.1002/marc.201100587
关键词
cationic polymerization; poly(2-oxazine); poly(2-oxazoline); stimuli-responsive polymer; thermoresponsive polymer
资金
- Dutch Polymer Institute (DPI)
- Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO)
The monomers 2-methyl-2-oxazine (MeOZI), 2-ethyl-2-oxazine (EtOZI), and 2-n-propyl-2-oxazine (nPropOZI) were synthesized and polymerized via the living cationic ring-opening polymerization (CROP) under microwave-assisted conditions. pEtOZI and pnPropOZI were found to be thermoresponsive, exhibiting LCST behavior in water and their cloud point temperatures (TCP) 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 TCP.
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