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- Title
P(VDF-HFP)-SiO<sub>2</sub>/SF电纺Janus纤维膜的制备及油水分离应用.
- Authors
刘建春; 武海娟; 方 涛; 徐 帅; 马彦龙; 朱晶心
- Abstract
The P(VDF-HFP)-SiO2/SF composite Janus nanofibrous membrane with asymmetric wettability is fabricated by electrospinning technology, using the hydrophobic nano-SiO2 modified polyvinylidene fluoro-hexafluoropropylene (P(VDF-HFP)) copolymer and silk fibroin (SF) as raw materials. The micro- morphology, composition, structure and the wettability of the fibrous membrane are characterized by scanning electron microscope, X-ray energy spectrometer, Fourier transform infrared spectrometer and water contact angle measuring instrument, and the influence of the thickness of hydrophobic layer on oil-water separation flux and separation efficiency is tested. The results show that the Janus fibrous membrane constructed with P(VDF-HFP)-SiO2 fibrous membrane as hydrophobic layer and SF fibrous membrane as hydrophilic layer has one-way water permeation function and good oil-water separation ability. When the thickness of hydrophobic layer is 70 μm and the thickness of hydrophilic layer is 130 μm, the water separation flux reaches 11 300 L/(m²·h·MPa), and the oil-water separation efficiency reaches 99.65%. This study provides a new material choice for the preparation of Janus oil-water separation membrane.
- Publication
Journal of Functional Materials / Gongneng Cailiao, 2022, Vol 53, Issue 1, p01204
- ISSN
1001-9731
- Publication type
Article
- DOI
10.3969/j.issn.1001-9731.2022.01.032