Janus polyvinylidene fluoride membranes with controllable asymmetric configurations and opposing surface wettability fabricated via nanocasting for emulsion separation
文献类型：期刊论文
| 作者 | Yang, Hao; Wang, Yi; Fang, Shang; Wang, Gang; Zhu, Lijing; Zeng, Zhixiang; Wang, Linghui |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2021 |
| 卷号 | 616 |
| 英文摘要 | Janus membrane (JM) with opposite wettability has great potential in separation of oil-in-water (O/W) and water-in-oil (W/O) emulsions. In this work, we have reported a simple, low cost nanocasting/NIPS strategy for preparation of the superhydrophobic and underwater oleophobic surface of JM for the first time. Poly (vinylidene fluoride) (PVDF) and polyethylenimine (PEI) blend membranes were fabricated on PDMS modified nonwoven fabric by non-solvent induced phase separation (NIPS) process. Then the as-prepared membranes were further modified with hydrophilic nano-SiO2 to improve the hydrophilicity of the top surface. Peel off PDMS modified non-woven fabric, parts of PDMS chains were imprinted to the membrane bottom surface with micronano three-dimensional microstructures, resulting in superhydrophobic property. The as-prepared JM exhibits an asymmetric wettability with the water contact angle of 35.3? and 151.8? of the opposite surfaces. By changing the orientation of the membrane, oil or water can be filtered respectively. The as-prepared JM shows excellent separation performance for both O/W emulsion and W/O emulsion, the separation efficiency reached 99.72 % and 99.68 %, respectively, as well as good long-term stability. This work is expected to yield a new way to fabricate the superhydrophobic surface of JM. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21944]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Zhu, LJ 2.Zeng, ZX (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Key Lab Marine Mat & Protect Technol, Key Lab Marine Mat & Related Technol, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yang, Hao,Wang, Yi,Fang, Shang,et al. Janus polyvinylidene fluoride membranes with controllable asymmetric configurations and opposing surface wettability fabricated via nanocasting for emulsion separation[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2021,616. |
| APA | Yang, Hao.,Wang, Yi.,Fang, Shang.,Wang, Gang.,Zhu, Lijing.,...&Wang, Linghui.(2021).Janus polyvinylidene fluoride membranes with controllable asymmetric configurations and opposing surface wettability fabricated via nanocasting for emulsion separation.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,616. |
| MLA | Yang, Hao,et al."Janus polyvinylidene fluoride membranes with controllable asymmetric configurations and opposing surface wettability fabricated via nanocasting for emulsion separation".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 616(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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