Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 11: POSTERS Amphiphilic Systems

CPP 11.6: Poster

Dienstag, 24. März 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).