Flux-Enhanced Polysulfone Membranes Blended With Abpbi As A Novel Additive
| Autor: | Bilge Eren, Yunus Erdoğan, Adem Sarihan, Erdal Eren |
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| Přispěvatelé: | Erdoğan, Yunus |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Scanning electron microscope Ultrafiltration Infrared spectroscopy 02 engineering and technology ABPBI 010402 general chemistry 01 natural sciences Contact angle chemistry.chemical_compound Materials Chemistry General Materials Science Polysulfone Hydrophilicity Fouling Membrane Membrane structure Anti-fouling 021001 nanoscience & nanotechnology 0104 chemical sciences High Flux Monomer chemistry Chemical engineering Mechanics of Materials 0210 nano-technology |
| Popis: | Enhanced-flux polysulfone membranes were prepared with poly (2,5-benzimidazole) additive. Structural and morphological characterizations of prepared membranes were performed by using Scanning electron microscope and Infrared spectroscopy techniques. Hydrophilicity, porosity and pore structure of the composite membranes were investigated with wet-dry membrane weight and contact angle measurements. Flux, rejection and fouling resistance tests were performed by using cross-flow filtration studies. Scanning electron microscope images showed that a low ratio of poly (2,5-benzimidazole) additive increased the top and bottom skin layer thickness and membrane structure turned from finger-like to sponge-like but increasing the poly (2,5-benzimidazole) ratio changed the pore structure to finger-like again. Infrared spectra showed that good interactions were established between poly (2,5-benzimidazole) and polysulfone. Contact angles of the membranes decreased from 60° to 38° with the addition of poly (2,5-benzimidazole) which proved the excellent hydrophilicity of the membranes. Also increasing the hydrophilicity was supported by Infrared spectra. At 200 kPa, pure water fluxes of the membranes increased from 228 to 455 L/m2.h. Bovine serum albumin rejection also increased with the addition of poly (2,5-benzimidazole), especially with low additive ratios. Flux recovery ratios of the membranes increased about 20% after the addition of poly (2,5-benzimidazole) and this showed that poly (2,5-benzimidazole) blended composite membranes have higher fouling resistance than pristine polysulfone membrane. Also, poly (2,5-benzimidazole) blended polysulfone membranes compared with poly [2,2-(m-phenylene)-5,5-bibenzimidazole] blended membrane which was our previous study. The comparison showed that that poly (2,5-benzimidazole) more effective and functional additive than poly [2,2-(m-phenylene)-5,5-bibenzimidazole] with its higher flux performance, fouling resistance and hydrophilicity characteristics. And also, poly (2,5-benzimidazole) additive more useful than poly [2,2-(m-phenylene)-5,5-bibenzimidazole] for using additive in membranes because of its so easy synthesis in one step, inexpensive monomer and low-cost advantages. © 2019 Elsevier Ltd We thank TUBITAK, "Scientist Support Department” for supporting by 2211-C Scholarship Program. |
| Databáze: | OpenAIRE |
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