Using Zero Average Contrast experiments to characterize temperature-dependent properties of microgels at ultrahigh densities
Thermoresponsive cross-linked polymer microgel particles are a particularly interesting class of colloidal model particles. They possess a variable degree of softness and a tuneable interaction potential that can be varied between hard-sphere-like and very soft repulsive. Moreover, microgel suspensions can be driven into states with densities far above close packing, so-called squeezed states, with interesting structural and dynamic properties. We have already successfully demonstrated that we can use Zero Average Contrast (ZAC) experiments to eliminate the structure factor and characterize the size, shape and structure of microgels at very high effective volume fractions. We now propose to extend these measurements and study the effect of temperature on the structural properties of microgels at ultrahigh densities above close packing.
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SCHURTENBERGER Peter; CRASSOUS Jerome; NOEJD Sofi; OBIOLS RABASA Marc; SCHWEINS Ralf and STRADNER Anna. (2012). Using Zero Average Contrast experiments to characterize temperature-dependent properties of microgels at ultrahigh densities. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1225
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