| AVS 65th International Symposium & Exhibition | |
| Advanced Surface Engineering Division | Tuesday Sessions |
| Session SE-TuP |
| Session: | Advanced Surface Engineering Division Poster Session |
| Presenter: | Golnaz Dianat, University of Southern California |
| Authors: | G. Dianat, University of Southern California M. Gupta, University of Southern California S. Seidel, University of Southern California M.M. Deluna, University of Southern California |
| Correspondent: | Click to Email |
We present a modified initiated chemical vapor deposition (iCVD) technique to synthesize porous polymer membranes. We demonstrate that we can pattern the deposition of the porous polymer membranes by using poly(dimethylsiloxane) (PDMS) masks. The porosity and thickness of the membranes can be controlled by varying the substrate temperature during monomer deposition. The functionality of membrane can be tuned by addition of a cross-linker during polymerization and allow for the fabrication of robust free-standing shaped membranes. Our ability to control the shape, thickness, porosity, and functionality of the porous membranes allows for the design of new surfaces for a variety of applications in sensors, filtration, and microfluidics. Asymmetric polymer membranes, that are composed of a dense top layer and porous bottom layer, can be synthesized using a combination of conventional and nonconventional iCVD conditions in a one-pot process. This method allows for a high degree of control over the thickness of the dense layer by simply controlling the deposition time and paves the way to synthesize ultrathin dense layers with sub-50nm thickness that is difficult to attain using other methods. The functionality of the dense and porous layers can be independently tailored to be either hydrophobic or hydrophilic, resulting in membranes that are fully hydrophilic, fully hydrophobic, or asymmetric in both structure and chemical functionality.