Low-cost nanofabrication of isoporous nanomembranes using hybrid lithography
| Autor: | Sheree Pagsuyoin, Hongwei Sun, Jason A. Perman, Akarapan Rojjanapinun |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fabrication
Materials science Polymers and Plastics Soft lithography Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Organic Chemistry Nanotechnology Polyvinylidene fluoride Nanoparticle monolayer law.invention chemistry.chemical_compound Nanolithography Membrane TP1080-1185 chemistry law Ultimate tensile strength Polymers and polymer manufacture Isoporous nanomembranes Lithography Filtration Nanosphere lithography |
| Zdroj: | Polymer Testing, Vol 102, Iss, Pp 107316-(2021) |
| ISSN: | 0142-9418 |
| Popis: | This work demonstrates an improved route to develop low-cost and robust isoporous polyvinylidene fluoride (PVDF) nanomembranes for industrial separation and purifications processes. The 4-step process excels at making uniform 100 nm and 20 nm pore membranes that exhibit high flux in both dead-end and cross-flow filtration. Our tests demonstrate that 90–100% rejection rates could be achieved in these membranes for perfluorooctanoic acid, sulfamethoxazole, bovine serum albumin, and SARS-COV-2 in high-concentration aqueous solutions. The membranes are nominally 50 μm thick and retain structural integrity, exhibiting high tensile strengths of 8.56 MPa and 8.31 MPa, respectively, due to improved routes to β crystalline formations of the PVDF. Our useful fabrication procedure is compatible with developed technologies that can quickly expand the opportunities of isoporous PVDF for processing of advanced materials and devices. |
| Databáze: | OpenAIRE |
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