[Zurück]

C. Feldgitscher, H. Peterlik, M. Puchberger, G. Kickelbick:
"Structural Investigations on Hybrid Polymers Suitable as a Nanoparticle Precipitation Environment";
Chemistry of Materials, 21 (2009), 4; S. 695 - 705.

Cross-linked hybrid polymer matrices with tunable hydrophilic/hydrophobic areas were prepared from end-group functionalized poly(ethylene oxides) (PEO) and poly(methylhydrido siloxanes) (PMHS) or trimethylsilyl terminated polydimethyl-co-polymethylhydrido siloxanes (PDMS-PMHS). The combination of the different polymer segments resulted in materials with hydrophilic and metal coordinating sections in a hydrophobic matrix. The polymer morphology was investigated with regard to its chemical composition and structural configuration. Besides spectroscopic methods, DSC and swelling tests were performed to study the chain mobility in the polymer matrix. The cross-linked polymers were swellable in methanol, reaching swelling degrees of up to 550%. On the basis of the excellent swelling behavior and the unique metal ion binding ability of the PEO segments, hybrid nanocomposites were prepared infiltrating the matrix with iron ions and forming nanocrystalline oxide particles in the cross-linked network. The resulting materials were analyzed by electron microscopy techniques, XRD, and small-angle X-ray scattering.

http://dx.doi.org/10.1021/cm802171s