Engineering a Highly Hydrophilic PVDF Membrane via Binding TiO2 Nanoparticles and a PVA Layer onto a Membrane Surface
| Autor: | Liu Dapeng, Xinzhen Zhao, Chunju He, Xiang Li, Aiwen Qin |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Vinyl alcohol
Materials science biology Polyvinylidene fluoride law.invention chemistry.chemical_compound Membrane X-ray photoelectron spectroscopy chemistry Chemical engineering law Polymer chemistry biology.protein Surface modification General Materials Science Bovine serum albumin Layer (electronics) Filtration |
| Zdroj: | ACS Applied Materials & Interfaces. 7:8427-8436 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.5b00978 |
| Popis: | A highly hydrophilic PVDF membrane was fabricated through chemically binding TiO2 nanoparticles and a poly(vinyl alcohol) (PVA) layer onto a membrane surface simultaneously. The chemical composition of the modified membrane surface was determined by X-ray photoelectron spectroscopy, and the binding performance of TiO2 nanoparticles and the PVA layer was investigated by a rinsing test. The results indicated that the TiO2 nanoparticles were uniformly and strongly tailored onto the membrane surface, while the PVA layer was firmly attached onto the surface of TiO2 nanoparticles and the membrane by adsorption-cross-linking. The possible mechanisms during the modification process and filtration performance, i.e., water permeability and bovine serum albumin (BSA) rejection, were investigated as well. Furthermore, antifouling property was discussed through multicycles of BSA solution filtration tests, where the flux recovery ratio was significantly increased from 20.0% for pristine PVDF membrane to 80.5% for PVDF... |
| Databáze: | OpenAIRE |
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