Thermo-responsive nanogels based on poly[NIPAAm-gra/f-(2-alkyl-2-oxazoline) ]s crosslinked in the micellar state

Stefan Zschoche, Juan Rueda-Sánchez, Volodymyr Boyko, Franziska Krahl, Karl Friedrich Arndt, Brigitte Voit

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

25 Citas (Scopus)

Resumen

Graft copolymers with thermo-sensitive PNIPAAm backbone and hydrophilic PEtOxa graft chains demonstrated typical amphiphilic behavior. For specific compositions stable micellelike aggregates were formed depending on the temperature. Applying long polyoxazoline side chains (DP > 120), stable reversible micelle-like aggregates with hydrodynamic radii of 30-40 nm could be obtained between 33 and 55 °C. These graft copolymers have been successfully crosslinked by electron-beam irradiation in the = micellar state yielding core/shell type nanogels with thermo-reversible swelling behavior. The temperature dependent volume change of the new thermo-responsive nanogels due to the phase transition of the PNIPAAm core has been verified by DLS. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Idioma originalEspañol
Páginas (desde-hasta)1035-1042
Número de páginas8
PublicaciónMacromolecular Chemistry and Physics
Volumen211
EstadoPublicada - 3 may. 2010

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