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Polyurethane/multi-walled carbon nanotube electrospun composite membrane for oil/water separation
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2022-01-12 , DOI: 10.1002/app.52117 Kandiyil Juraij 1 , Chinglenthoiba Chingakham 2, 3 , Olongal Manaf 1 , Paroly Sagitha 1 , Vasudevan Suni 4 , Vandana Sajith 2 , Athiyanathil Sujith 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2022-01-12 , DOI: 10.1002/app.52117 Kandiyil Juraij 1 , Chinglenthoiba Chingakham 2, 3 , Olongal Manaf 1 , Paroly Sagitha 1 , Vasudevan Suni 4 , Vandana Sajith 2 , Athiyanathil Sujith 1
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Superoleophilic and high-strength electrospun membranes are promising materials for oil/water separation applications. Here we report the fabrication of a mechanically robust, hydrophobic polyurethane/multi-walled carbon nanotube (PU/MWCNT) electrospun composite membrane for gravity-driven oil/water separation. Various electrospun composite membranes with different MWCNT loadings were developed. Spinning parameters such as polymer concentration, solvent ratio, applied voltage, flow rate, and working distance were systematically optimized. The incorporation of MWCNT has increased the thermal stability, hydrophobicity, mechanical properties, and dye adsorption capacity of the PU membrane. The optimized composite fibrous membrane (PU/0.2-MWCNT) exhibited a percentage elongation of 502%. All the PU/MWCNT composite membranes were found to be superoleophilic in nature. The optimized composite membrane showed the highest oil sorption capacity and lab-scale oil flux of 14.21–24.07 gg−1 and 425.44 Lm−2 h−1, respectively. In the oil sorption process, all electrospun membranes were fitted to a pseudo second-order kinetic model. Furthermore, electrospun composite membranes could adsorb toxic dye (Methylene blue) from the oil–water mixture. The PU/MWCNT composite membrane could be a potential candidate for oil/water separation applications.
中文翻译：
用于油水分离的聚氨酯/多壁碳纳米管电纺复合膜
超亲油和高强度电纺膜是用于油/水分离应用的有前途的材料。在这里，我们报告了一种机械坚固、疏水性聚氨酯/多壁碳纳米管 (PU/MWCNT) 电纺复合膜的制造，用于重力驱动的油/水分离。开发了具有不同 MWCNT 负载的各种电纺复合膜。系统优化了聚合物浓度、溶剂比、施加电压、流速和工作距离等纺丝参数。MWCNT的加入提高了PU膜的热稳定性、疏水性、机械性能和染料吸附能力。优化后的复合纤维膜 (PU/0.2-MWCNT) 的伸长率为 502%。发现所有 PU/MWCNT 复合膜本质上都是超亲油的。优化后的复合膜具有最高的吸油能力和实验室规模的油通量为 14.21-24.07 gg-1和 425.44 Lm -2 h -1分别。在油吸附过程中，所有电纺膜都符合伪二级动力学模型。此外，电纺复合膜可以从油水混合物中吸附有毒染料（亚甲蓝）。PU/MWCNT复合膜可能是油/水分离应用的潜在候选者。
更新日期：2022-01-12
中文翻译：
用于油水分离的聚氨酯/多壁碳纳米管电纺复合膜
超亲油和高强度电纺膜是用于油/水分离应用的有前途的材料。在这里，我们报告了一种机械坚固、疏水性聚氨酯/多壁碳纳米管 (PU/MWCNT) 电纺复合膜的制造，用于重力驱动的油/水分离。开发了具有不同 MWCNT 负载的各种电纺复合膜。系统优化了聚合物浓度、溶剂比、施加电压、流速和工作距离等纺丝参数。MWCNT的加入提高了PU膜的热稳定性、疏水性、机械性能和染料吸附能力。优化后的复合纤维膜 (PU/0.2-MWCNT) 的伸长率为 502%。发现所有 PU/MWCNT 复合膜本质上都是超亲油的。优化后的复合膜具有最高的吸油能力和实验室规模的油通量为 14.21-24.07 gg-1和 425.44 Lm -2 h -1分别。在油吸附过程中，所有电纺膜都符合伪二级动力学模型。此外，电纺复合膜可以从油水混合物中吸附有毒染料（亚甲蓝）。PU/MWCNT复合膜可能是油/水分离应用的潜在候选者。
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