Inter droplet polymer exchange in AOT based microemulsions
AOT based water in oil microemulsions in the droplet phase represent perfect systems to study the effects of soft confinement. By choosing the appropriate deuteration scheme, neutron scattering allows to focus either on confinement properties or on the water soluble polymer inserted into the core of the microemulsion droplets. At low droplet volume fractions (i.e. 10%) droplet interactions can be neglected allowing to investigate structural and dynamic properties of single confined polymer chains. This was achieved in detail in our previous experiments. Increasing droplet concentration dynamic percolation sets in and droplet collision times are reduced to several nano seconds. Besides polymer diffusion inside a single droplet, polymer dynamics between several droplets become important leading to inter droplet diffusion. The latter will be addressed in this proposal by neutron spin echo spectroscopy on polymer loaded microemulsions in the droplet phase. Different contrast situations will thereby allow to disentangle droplet and polymer dynamics taking place on similar time and length scales.
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KUTTICH Bjorn; GALLEI Markus; GRILLO Isabelle; HOFFMANN Ingo; MATT Alexander Daniel; PORCAR Lionel and STUEHN Bernd. (2018). Inter droplet polymer exchange in AOT based microemulsions. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1513
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