Title | 3D-Printed Membranes with a Zwitterionic Hydrogel Coating for More Robust Oil-Water Separation |
Publication Type | Journal Article |
Year of Publication | 2020 |
Authors | Song, Y, Wang, B, Altemose, P, Kowall, C, Li, L |
Journal | Industrial and Engineering Chemistry Research |
Volume | 59 |
Pagination | 21058-21065 |
Date Published | dec |
ISSN | 15205045 |
Keywords | 10.7, Module Manufacturing, Project 10.7 |
Abstract | Three-dimensional (3D)-printed membranes via stereolithography (SLA) are promising in oil-water separation, which is the key in the purification of industrial oily wastewater. To achieve gravity-driven oil-water separation, the membrane material needs to be simultaneously hydrophilic/oleophobic. However, most of the state-of-The-Art materials for SLA do not meet the requirement. While water-Adsorbing hydrogel is simultaneously hydrophilic/oleophobic and there have been reports on 3D printing of hydrogels in biomedical applications, the hydrogel is too soft for membrane application. Here, we report a simple approach to tackle the issue: A hydrogel coating on SLA-based plastic membranes. The coating is fabricated, using [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide as the zwitterionic monomer and acrylamide as the comonomer, via in situ polymerization on SLA-based plastic membranes. The contact angle tests and Fourier transform infrared spectrum show that such a membrane readily adsorbs water and becomes simultaneously hydrophilic/oleophobic. The oil-water separation tests indicate that the water-Adsorbed membrane is highly efficient in gravity-driven oil-water separation in 31 repeating cycles. Our results indicate the great potential of 3D-printed membranes in oil-water separation. |
URL | https://pubs.acs.org/doi/abs/10.1021/acs.iecr.0c04436 |
DOI | 10.1021/acs.iecr.0c04436 |