期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 34, 期 11, 页码 938-943出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201300016
关键词
additive manufacturing technologies; polyHIPE; porous polymers; photopolymerization; thiol-ene chemistry
资金
- Ministry of Science, Higher Education and Technology of the Republic of Slovenia (Centre of Excellence PoliMaT) [3211-10-000057]
- Slovene Human Resources Development and Scholarship Fund
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 sufficient enough to withstand in-mold curing or computer-controlled layer-by-layer stereolithography without phase separation. By including macroscale cellular cavities within the build file, 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.
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