The High Flux of Superhydrophilic-Superhydrophobic Janus Membrane of cPVA-PVDF/PMMA/GO by Layer-by-Layer Electrospinning for High Efficiency Oil-Water Separation
Abstract
:1. Introduction
2. Materials and Methods
2.1. Chemicals
2.2. Preparation of Janus Composite Membrane
2.3. Preparation and Separation of Water-in-Oil Emulsions
2.4. Characterization
3. Results and Discussion
3.1. Characterization of Janus Composite Membrane
3.2. Mechanical Properties of Janus Composite Membrane
3.3. Wettability of Janus Composite Membrane
3.4. Oil-Water Separation Performance of Janus Membrane
3.5. Filtration Performance Evaluation
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Property | Water-in-Diesel Emulsions |
---|---|
Viscosity (mPa × S) | 3.52 |
Density (g cm−3) | 0.82 |
Surface tension (mN m−1) | 29.42 |
Water content (%) | 5.8 |
Membrane Side | θWA | θOA | θwater–in–oil | θoil–in–water | |||||
---|---|---|---|---|---|---|---|---|---|
Contact Angle (°) | Wettability | Testing oil | Contact Angle (°) | Wettability | Contact Angle (°) | Wettability | Contact Angle (°) | Wettability | |
cPVA | 0 | Hydrophilic | n-hexane | 0 | Oleophilic | 145 | Hydrophobic | 140 | Oleophobic |
PVDF/PMMA/GO | 153 | Hydrophobic | n-hexane | 0 | Oleophilic | 146 | Hydrophobic | 0 | Oleophilic |
Materials | Fabrication Method | Water Contact Angle of Hydrophobic Side | Major Applications | Reference |
---|---|---|---|---|
PLA-SiO2/PLA-CNTs | electrospinning | 142° | oil–water separation | [53] |
PVDF-M-CNT | coating | 115.3° | membrane distillation | [52] |
c-PVA/f-CNT | coating | 157° | oil–water separation | [41] |
PCFE/GO/JGO | coating | 90° | water treatments | [54] |
HP-PET/GNs-PET | coating | 95.3° | oil–water separation | [55] |
AuNR/SWNT | coating | 110° | photothermal water desalination | [56] |
CNTs/MPPM | coating | 158° | oil–water separation | [57] |
PAN/CNTs | coating | 100° | oil–water separation | [44] |
polydopamine-coated SWCNT/SWCNT | coating | 104° | oil–water separation | [58] |
cPVA/PVDF-PMMA-GO | electrospinning | 153° | oil–water separation | This work |
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Wu, H.; Shi, J.; Ning, X.; Long, Y.-Z.; Zheng, J. The High Flux of Superhydrophilic-Superhydrophobic Janus Membrane of cPVA-PVDF/PMMA/GO by Layer-by-Layer Electrospinning for High Efficiency Oil-Water Separation. Polymers 2022, 14, 621. https://doi.org/10.3390/polym14030621
Wu H, Shi J, Ning X, Long Y-Z, Zheng J. The High Flux of Superhydrophilic-Superhydrophobic Janus Membrane of cPVA-PVDF/PMMA/GO by Layer-by-Layer Electrospinning for High Efficiency Oil-Water Separation. Polymers. 2022; 14(3):621. https://doi.org/10.3390/polym14030621
Chicago/Turabian StyleWu, Han, Jia Shi, Xin Ning, Yun-Ze Long, and Jie Zheng. 2022. "The High Flux of Superhydrophilic-Superhydrophobic Janus Membrane of cPVA-PVDF/PMMA/GO by Layer-by-Layer Electrospinning for High Efficiency Oil-Water Separation" Polymers 14, no. 3: 621. https://doi.org/10.3390/polym14030621