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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 16: POSTERS Polyelectrolytes and Biological Systems

CPP 16.16: Poster

Dienstag, 24. März 2009, 14:00–16:30, P3

Investigation of Hofmeister effects in the swelling behaviour of polyelectrolyte microgels — •Michael Zeiser, Yvonne Hertle, and Thomas Hellweg — Universität Bayreuth, Physikalische Chemie I, Universitätsstr. 30, 95447 Bayreuth, Germany

The present contribution describes the swelling behaviour of different poly(N-isopropylacrylamide) copolymer microgels with charged comonomers as a function of counterion type and concentration. To our knowledge Hofmeister effects were not yet studied for these responsive polymer colloids. The swelling behaviour is studied by means of photon correlation spectroscopy and small angle neutron scattering. Also influences with respect to the lower critical solution temperature are reported.