Regensburg 2010 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 31: Poster: Polymer Dynamics
CPP 31.17: Poster
Mittwoch, 24. März 2010, 17:30–19:00, Poster C
Dynamics and Morphology of Different Poly(alkylene oxide)s — •Christine Gerstl1, Gerald Johannes Schneider1, Jürgen Allgaier1, Angel Alegria2, Juan Colmenero2,3, and Dieter Richter1 — 1Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany — 2Centro de Fisica de Materiales, Apartado 1072, 20080 San Sebastian, Spain — 3Donostia International Physics Center, Apartado 1072, 20080 San Sebastian, Spain
Poly(alkylene oxide)s (PAOs) form a homologous series of type-A polymers with side groups of varying length. Since the PAOs poly(ethylene oxide) and poly(propylene oxide) are known for a long time and have been studied extensively, the higher homologues are ideally suited to probe the influence of side chains on the dynamics of a polymer.
We will present the results of temperature dependent neutron diffraction experiments on four different PAOs with side chain lengths ranging from CH2CH3 (poly(butylene oxide)) to (CH2)9CH3 (poly(dodecene oxide)). Furthermore, the chain conformation studied by neutron small angle scattering (SANS) will be shown and also compared to literature values of other side chain polymers.
Moreover, the relaxation behaviour of the whole polymer chain as well as the segmental dynamics, which were investigated by means of broadband dielectric spectroscopy and neutron backscattering are presented and compared to theoretical predictions.