Microwave-assisted cationic ring-opening polymerization of 2-oxazolines: A powerful method for the synthesis of amphiphilic triblock copolymers
(2006) Macromolecules — Vol. 39, n° 14, p. 4719-4725 (2006)
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- Abstract
- We report on the first successful example of the preparation of triblock copolymers via a cationic ring-opening polymerization procedure. A library of 30 triblock copolymers was prepared from 2-methyl-, 2-ethyl-, 2-nonyl-, and 2-phenyl-2-oxazoline in a single-mode microwave reactor. The polymers exhibited narrow molecular weight distributions and showed only minor deviations from the targeted monomer ratio of 33:33:33. The glass-transition temperature of the triblock copolymers spanned the range from 50 to 100 degrees C depending on the incorporated monomers. The micellization behavior was investigated for some amphiphilic triblock copoly(2-oxazoline)s containing two hydrophilic and one hydrophobic blocks. The size of the micelles was larger when the hydrophobic block is located at one end of the triblock copoly(2-oxazoline) s, as measured by atomic force microscopy and dynamic light scattering.
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Hoogenboom, R., Wiesbrock, F., Huang, H., Leenen, M., Thijs, H., van Nispen, S., Van der Loop, M., Fustin, C.-A., Jonas, A., Gohy, J.-F., & Schubert, U. (2006). Microwave-assisted cationic ring-opening polymerization of 2-oxazolines: A powerful method for the synthesis of amphiphilic triblock copolymers. Macromolecules, 39(14), 4719-4725. https://doi.org/10.1021/ma060952a (Original work published 2006)