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M. Susec, S. Ligon, J. Stampfl, R. Liska, P. Krajnc:
"Hierarchically Porous Materials from Layer-by-Layer Photopolymerization of High Internal Phase Emulsions";
Macromolecular Rapid Communications, 34 (2013), 938 - 943.

A combination of high internal phase emulsion (HIPE) templating and additive manufacturing
technology (AMT) is applied for creating hierarchical porosity within an acrylate and acrylate/
thiol-based polymer network. The photopolymerizable formulation
is optimized to produce emulsions with a volume fraction
of droplet phase greater than 80 vol%. Kinetic stability
of the emulsions is suffi cient enough to withstand in-mold
curing or computer-controlled layer-by-layer stereolithography
without phase separation. By including macroscale cellular
cavities within the build fi le, a level of controlled porosity is
created simultaneous to the formation of the porous microstructure
of the polyHIPE. The hybrid HIPE-AMT technique
thus provides hierarchically porous materials with mechanical
properties tailored by the addition of thiol chain transfer agent.

http://dx.doi.org/10.1002/marc.201300016

http://publik.tuwien.ac.at/files/PubDat_218938.pdf