Polymers 2010, 2(3), 188-199; doi:10.3390/polym2030188
Article

Temperature Induced Solubility Transitions of Various Poly(2-oxazoline)s in Ethanol-Water Solvent Mixtures

1 Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands 2 Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstrasse 10, 07743 Jena, Germany 3 Dutch Polymer Institute, John F. Kennedylaan 2, 5612 AB Eindhoven, The Netherlands 4 Supramolecular Chemistry group, Department of Organic Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
* Authors to whom correspondence should be addressed.
Received: 13 June 2010; in revised form: 3 August 2010 / Accepted: 6 August 2010 / Published: 10 August 2010
(This article belongs to the Special Issue Novel Stimuli-Responsive (co)Polymers)
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Abstract: The solution behavior of a series of poly(2-oxazoline)s with different side chains, namely methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, pentyl, hexyl, heptyl, octyl, nonyl, phenyl and benzyl, are reported in ethanol-water solvent mixtures based on turbidimetry investigations. The LCST transitions of poly(2-oxazoline)s with propyl side chains and the UCST transitions of the poly(2-oxazoline)s with more hydrophobic side chains are discussed in relation to the ethanol-water solvent composition and structure. The poly(2-alkyl-2-oxazoline)s with side chains longer than propyl only dissolved during the first heating run, which is discussed and correlated to the melting transition of the polymers.
Keywords: poly(2-oxazoline); solubility transitions; ethanol-water; LCST; UCST; thermoresponsiveness

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MDPI and ACS Style

Lambermont-Thijs, H.M.L.; Kuringen, H.P.C.; Put, J.P.W.; Schubert, U.S.; Hoogenboom, R. Temperature Induced Solubility Transitions of Various Poly(2-oxazoline)s in Ethanol-Water Solvent Mixtures. Polymers 2010, 2, 188-199.

AMA Style

Lambermont-Thijs HML, Kuringen HPC, Put JPW, Schubert US, Hoogenboom R. Temperature Induced Solubility Transitions of Various Poly(2-oxazoline)s in Ethanol-Water Solvent Mixtures. Polymers. 2010; 2(3):188-199.

Chicago/Turabian Style

Lambermont-Thijs, Hanneke M. L.; Kuringen, Huub P. C. van; Put, Jeroen P. W. van der; Schubert, Ulrich S.; Hoogenboom, Richard. 2010. "Temperature Induced Solubility Transitions of Various Poly(2-oxazoline)s in Ethanol-Water Solvent Mixtures." Polymers 2, no. 3: 188-199.

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