Dresden 2009 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 11: POSTERS Amphiphilic Systems
CPP 11.6: Poster
Tuesday, March 24, 2009, 14:00–16:30, P3
Collapse behavior of thermosensitive poly(2-oxazoline) copolymers — Stephan Salzinger1, Stephan Huber1, Rainer Jordan1, and •Christine M. Papadakis2 — 1TU München, Department Chemie, Garching — 2TU München, Physikdepartment E13, Garching
The poly(2-oxazoline) (POx) system offers the possibility to tune the water-solubility in a wide range. Moreover, using 2-isopropyl (iPr) or n-propyl (nPr) as a side group results in a thermo-sensitive polymer with a lower critical solution temperature (LCST). Along with a number of architectures (homo-, gradient or block copolymers), a large variety of polysoaps can be created [1].
We have investigated the LCST behavior of iPrOx or nPrOx homopolymers as well as their gradient copolymers with n-nonyl-2-oxazoline (NOx) in aqueous solution. The LCST and the molecular aggregation behavior were investigated using single molecule as well as ensemble characterization techniques (fluorescence correlation spectroscopy (FCS), turbidimetry and scattering techniques).
[1] R. Jordan, C. M. Papadakis, et al., Colloid Polym. Sci. 282, 833 (2004); Macromol. Chem. Phys. 208, 1402 (2007); Colloid Polym. Sci. 285, 491 (2007); Macromol. Chem. Phys. 209, 2248, (2008).