Abstract
Poly(aryl ether nitrile) (PEN) was used to fabricate ultrafiltration membrane via immersion precipitation phase inversion method. The effects of polyvinyl pyrrolidone (PVP) of different molecular weights and concentrations on the structure and performance of PEN membranes were investigated. The membranes were observed by scanning electron microscope, atomic force microscope, equilibrium water content (EWC), porosity (ε), and so on. The membranes were subjected to ultrafiltration characterizations such as pure water flux (PWF), compaction factor (CF), hydraulic permeability (Pm), and bovine serum albumin (BSA) rejection rate. The hydrophilicity was characterized by infrared spectroscopy and contact angle tests. Results showed that molecular weight of PVP had significant effect on PEN membrane formation, which the membrane prepared by PVP-k30 exhibited excellent comprehensive performance. Meanwhile, the concentration of PVP-k30 could effectively control the select-permeability of PEN membrane. With PVP-k30 concentration increased from 7 to 13 wt%, the prepared PEN membranes got higher EWC, ε, CF, and Pm. The PWF increased from 146.5 to 249.1 L m−2 h−1 bar−1, while the overall rejection of BSA remained above 90%. Further increasing the addition amount to 16 wt%, the membrane performance began to decline. Finally, the addition of PVP-k30 could effectively improve the hydrophilicity of prepared PEN membrane surface.
Funding source: Research Startup program of Donghua University
Award Identifier / Grant number: 285-07-005702
Funding source: Key-Area Research and Development Program of Guangdong Province
Award Identifier / Grant number: 2020B010182002
Acknowledgements
We thank Dr. Lei Liu and Dr. Li Wei for their help in membrane characterization.
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Author contributions: The author has accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This work was supported by Research Startup program of Donghua University (285-07-005702) and the Key-Area Research and Development Program of Guangdong Province (2020B010182002).
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Conflict of interest statement: The author declares no conflicts of interest regarding this article.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/polyeng-2021-0359).
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- Frontmatter
- Material properties
- Research progress of low dielectric constant polymer materials
- Natural rubber reinforced with super-hydrophobic multiwalled carbon nanotubes: obvious improved abrasive resistance and enhanced thermal conductivity
- Epoxy resin/graphene nanoplatelets composites applied to galvanized steel with outstanding microwave absorber performance
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