Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 8: Poster: Nanoparticles and Composite Materials
CPP 8.26: Poster
Montag, 26. März 2012, 17:30–20:00, Poster A
Studies on microgel-polymer blends — •Florian Schneider1, Gerald Johannes Schneider1, Andreea Balaceanu2, Andrij Pich2, Wim Pykhout-Hintzen3, Jürgen Allgaier3, and Dieter Richter3 — 1Jülich Centre for Neutron Science, 85747 Garching, Germany — 2DWI an der RWTH Aachen e.V., 52056 Aachen, Germany — 3Jülich Centre for Neutron Science & Institute for Complex Systems, Forschungszentrum Jülich GmbH, 52425 Jülich
Microgels are formed by crosslinking of single polymer chains. Possible characteristics of the resulting structures can include sensitivity to light, temperature and to chemical properties of the solvent. The response of the gel affect it's physical structure, for example changes in particle size or density. Up to now, studies mainly concentrate on microgels dissolved in water.
Combining the idea of filler particles to tune the properties of a polymer matrix with the concept of microgels, new and interesting composites can be imagined. Not only does the usage of soft, organic fillers result in lower compound weights, it also opens the possibility to influence the composites' properties by varying external parameters.
Our studies are based on custom poly(vinylcaprolactam) microgels. Their physical structure and it's dependency on the properties of the solvent as well as the possibility of dispersing them in a polymer matrix were resolved by different neutron scattering techniques. Moreover first results concerning their influence on the dynamics of a polymer matrix were obtained in rheology-experiments.