Dresden 2009 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 9: Nanoparticles II
CPP 9.11: Vortrag
Montag, 23. März 2009, 16:45–17:00, ZEU 114
Solid State NMR for Polymer Nanocomposites — •Anastasia Vyalikh1, Francis Costa1,2, Gert Heinrich1, Dominique Massiot3, and Ulrich Scheler1 — 1Leibniz Institute of Polymer Research Dresden, Germany — 2Borealis Polyolefine GmbH, Linz, Austria — 3Université dOrléans, France
Incorporating layered double hydroxide (LDH), which belongs to a class of synthetic clays with layered geometry, into polymers can significantly improve the materials properties even at low filler concentration. Compatibility with a non-polar polymer matrix and expansion of interlayer space in LDH are achieved by intercalation of surfactant molecules, that, in fact, can strongly affect the crystal structure of aluminium hydroxide layers.[1, 2] In the present work the 27Al MAS and 27Al triple-quantum (3Q)-MAS NMR has been applied in order to monitor stepwise the structural changes as a result of surfactant modification of LDH and to quantitatively characterise the resulting structures.[3] Additional insight is gained from high-resolution solid-state 1H NMR, which gives detailed information on protons in the layered structure, on water and the surfactant. [1] F.R. Costa, A. Leuteritz, U. Wagenknecht, D. Jehnichen, L. Häußler, and G. Heinrich, Appl. Clay Sci. 38 (2008) 153. [2] J. Rocha, M. del Arco, V. Rives, and Ulibarri, M.A., J. Mater. Chem. 9 (1999) 2499. [3] A. Vyalikh, D. Massiot, U. Scheler, Magn. Reson. Chem. (submitted)