Institute for Print and Media Technology, Chemnitz University of Technology, Reichenhainer Str. 70, 09126 Chemnitz, Germany.
Langmuir. 2012 Feb 14;28(6):3316-21. doi: 10.1021/la2025236. Epub 2012 Jan 31.
Inkjet printing is employed to apply a mechanically stable reinforcing pattern to polymeric microsieves prepared by float casting, where particles are used as molds for the pores. A mixture of silica particles and nonvolatile monomers is cast onto a water surface and subsequently photopolymerized to produce membranes consisting of a polymer film with embedded particles. These composite membranes are transferred onto an aluminum foil. Subsequently, a UV-curable ink is directly inkjet-printed onto the membranes in line patterns of grids or honeycombs and cured by UV radiation to create a mechanically reinforcing pattern. Afterwards, the particles and the aluminum foil are removed by chemical etching. The reinforcing pattern overcasts 40% of the previously manufactured membrane, is mechanically stable, and gives the microsieves such a robustness that they can be handled in further manufacturing processes.
喷墨打印被用于将机械稳定的增强图案应用于通过浮法铸造制备的聚合物微筛，其中颗粒用作孔的模具。将二氧化硅颗粒和非挥发性单体的混合物浇铸到水面上，然后进行光聚合以产生由嵌入颗粒的聚合物膜组成的膜。将这些复合膜转移到铝箔上。随后，将 UV 可固化油墨直接以网格或蜂窝状的行线图案喷墨打印到膜上，并通过 UV 辐射固化以形成机械增强图案。之后，通过化学蚀刻去除颗粒和铝箔。增强图案覆盖了先前制造的膜的 40%，机械稳定，并使微筛具有如此的坚固性，以至于它们可以在进一步的制造过程中处理。
