posted on 2021-09-28, 16:15authored byHande Barkan-Öztürk, Angelika Menner, Alexander Bismarck
Micromixers were
fabricated from emulsion-templated macroporous
polymers, known as polymerizing high internal-phase emulsions (polyHIPEs).
Micromixers are mixing elements containing submillimeter channels,
in which mixing occurs by molecular diffusion in the laminar flow
regime. PolyHIPEs possess an interconnected pore structure with connected
channels, which are ideal to mix liquids. We investigated the residence
time distribution of polyHIPE micromixers in comparison to a helix
static mixer using a tracer method, which allows for quantifying the
deviation from ideal plug flow. The axial dispersed flow was modeled,
and the obtained axial dispersion number is in good agreement with
that of commercial split-and-recombination micromixers. Two competitive
parallel reactions (4th Bourne reaction) were performed to characterize
the efficiency of micromixing of polyHIPE mixers. We show that polyHIPE
micromixers are more efficient than a commercial helix static mixer.