Properties and preparation of PVDF/PDMS superhydrophobic membrane for rapid oil-water separation by one-step method

doi:10.19398/j.att.202106068

Abstract

Abstract: In order to prepare a kind of superhydrophobic membrane for rapid oil-water separation, under the effect of high-voltage electric field, co-spinning of the polydimethylsiloxane(PDMS) and polyvinylidene fluoride(PVDF) was performed through electrospinning for the purpose of one-step preparation of superhydrophobic composite membrane material containing PVDF nanofibers and PDMS microspheres. The morphology and performance of the composite membrane material were analyzed using field emission scanning electron microscope, Fourier transform infrared spectrometer and optical contact angle meter. The results show that the superhydrophobic composite membrane exhibits excellent oil-water separation performance, with oil-water separation flux of 6100 L/(m²·h·bar), the separation efficiency of 99.5%. It can be used for process production and demonstrate a broad application prospect.

Key words: superhydrophobic membrane, PDMS/PVDF composite membrane, electrospinning, nanofiber, oil-water separation

摘要： 为了制备一种可用于快速油-水分离的超疏水膜,在高压电场作用下,通过静电纺丝法共纺聚二甲基硅氧烷(PDMS)和聚偏氟乙烯(PVDF),一步制备含有PVDF纳米纤维和带有PDMS微球的超疏水复合膜材料。采用场发射扫描电子显微镜、傅氏转换红外线光谱仪和光学接触角仪对该复合膜材料进行形貌和性能分析,结果表明:该超疏水复合膜表现出优异的油-水分离性能,油-水分离通量达到6100 L/(m²·h·bar),分离效率可达99.5%,并且可以连续生产,展现出广阔的应用前景。

关键词: 超疏水膜, PDMS/PVDF复合膜, 静电纺丝, 纳米纤维, 油-水分离

CLC Number:

TB332

SHI Min, WANG Tao, WANG Sheng. Properties and preparation of PVDF/PDMS superhydrophobic membrane for rapid oil-water separation by one-step method[J]. Advanced Textile Technology, 2022, 30(4): 108-114.

石敏, 王騊, 王晟. 快速油-水分离用PVDF/PDMS超疏水膜的一步法制备及性能[J]. 现代纺织技术, 2022, 30(4): 108-114.

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