接触角
膜蒸馏
膜
材料科学
静电纺丝
相位反转
化学工程
热重分析
差示扫描量热法
六氟丙烯
高分子化学
含氟聚合物
扫描电子显微镜
多孔性
聚合物
分析化学(期刊)
复合材料
四氟乙烯
海水淡化
化学
色谱法
工程类
物理
热力学
生物化学
共聚物
作者
Norhan Nady,Noha Salem,Sherif Kandil
出处
期刊:Polymers
[MDPI AG]
日期:2021-03-04
卷期号:13 (5): 790-790
被引量:5
标识
DOI:10.3390/polym13050790
摘要
In this work, a novel polymeric membrane was innovated in terms of composition and preparation techniques. A blend of poly(vinylidene fluoride-co-hexafluoropropylene) (PcH) and poly(ethersulfone) (PES) (18 wt.% total polymer concentration) was prepared using a N-methylpyrrolidone (NMP) and N, N-Dimethylformamide (DMF) solvents mixture, while Lithium chloride (0.05–0.5 wt.%) was used as an additive. The electrospinning and phase inversion techniques were used together to obtain a novel membrane structure. The prepared membranes were characterized using scanning electron microscope imaging, energy dispersive X-Ray, differential scanning calorimeter, thermogravimetric analysis, and Fourier transfer infrared spectroscopy-attenuated total reflectance analyses. Moreover, the static water contact angle, membrane thickness, porosity, surface roughness as well as water vapor permeability were determined. ImageJ software was used to estimate the average fiber diameter. Additionally, the effect of the change of PcH concentration and coagulation bath temperature on the properties of the fabricated membrane was studied. The novel developed membrane has shown a good efficiency in terms of properties and features, as a membrane suitable for membrane distillation (MD); a high porosity (84.4% ± 0.6), hydrophobic surface (136.39° ± 3.1 static water contact angle), and a water vapor permeability of around 4.37 × 10−5 g·m/m2·day·Pa were obtained. The prepared membrane can be compared to the MD membranes commercially available in terms of properties and economic value.
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