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Fabrication of a PAN–PA6/PANI membrane using dual spinneret electrospinning followed by in situ polymerization for separation of oil-in-water emulsions
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020-07-15 , DOI: 10.1039/d0nj03231j Mehdi Faraji 1, 2, 3, 4, 5 , Seyed Reza Nabavi 1, 2, 3, 4, 5 , Hamed Salimi-Kenari 3, 4, 5, 6, 7
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020-07-15 , DOI: 10.1039/d0nj03231j Mehdi Faraji 1, 2, 3, 4, 5 , Seyed Reza Nabavi 1, 2, 3, 4, 5 , Hamed Salimi-Kenari 3, 4, 5, 6, 7
Affiliation
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A polyacrylonitrile–polyamide 6/polyaniline (PAN–PA6/PANI) doped membrane was prepared using dual spinneret simultaneous electrospinning of PAN and PA6 and in situ polymerization of aniline at low temperature. The performance of the membrane was investigated in separation of non-surfactant and different surfactant oil/water emulsions like SDS, Tween 80 and Span 80. The field emission electron microscopy (FESEM) and energy dispersive X-ray (EDS) results revealed that PAN–PA6 nanofibers are coated uniformly with PANI. According to the atomic force microscopy (AFM) maps, the surface roughness of the fabricated membrane was increased from 51 to 83 after coating, which can improve the membrane flux and oil rejection. The stress–strain test displayed that PA6 improved the PAN mat tensile strength from 3.88 to 11.86 MPa. Post treatment of PAN–PA6/PANI with doping in HCl 1 M can improve the membrane hydrophilicity and separation efficiency. The effect of the polymerization time on the membrane porosity and pore volume was investigated. The optimum time of polymerization where the membrane has high permeate flux (326 Lmh) and oil rejection (97.8%) was found to be 60 min for non-surfactant (hexane/water) emulsion separation. The performance of the membrane was studied for separation of petroleum ether, gasoline and gas oil emulsions in water. The reusability and chemical resistance of the membrane in harsh conditions were investigated.
中文翻译：
PAN-PA6 / PANI膜的制造采用双喷丝头静电纺丝，然后进行原位聚合以分离水包油型乳液
聚丙烯和聚酰胺6 /聚苯胺（PAN-PA6 / PANI）掺杂的膜是使用PAN和PA6双喷丝头同时电纺原位制备的低温下苯胺的聚合。研究了该膜在分离非表面活性剂和不同表面活性剂油/水乳液（如SDS，Tween 80和Span 80）中的性能。场发射电子显微镜（FESEM）和能量色散X射线（EDS）结果表明，PAN –PA6纳米纤维均匀涂有PANI。根据原子力显微镜（AFM）图，涂覆后制成的膜的表面粗糙度从51增加到83，可以改善膜通量和除油率。应力应变测试表明，PA6将PAN垫的抗张强度从3.88 MPa提高到11.86 MPa。掺杂HCl 1M的PAN-PA6 / PANI后处理可以提高膜的亲水性和分离效率。研究了聚合时间对膜孔隙率和孔体积的影响。对于非表面活性剂（己烷/水）乳液分离，发现膜具有高渗透通量（326 Lmh）和排油率（97.8％）的最佳聚合时间为60分钟。研究了该膜在水中分离石油醚，汽油和粗柴油乳液的性能。研究了膜在恶劣条件下的可重复使用性和耐化学性。
更新日期：2020-08-11
中文翻译：
PAN-PA6 / PANI膜的制造采用双喷丝头静电纺丝，然后进行原位聚合以分离水包油型乳液
聚丙烯和聚酰胺6 /聚苯胺（PAN-PA6 / PANI）掺杂的膜是使用PAN和PA6双喷丝头同时电纺原位制备的低温下苯胺的聚合。研究了该膜在分离非表面活性剂和不同表面活性剂油/水乳液（如SDS，Tween 80和Span 80）中的性能。场发射电子显微镜（FESEM）和能量色散X射线（EDS）结果表明，PAN –PA6纳米纤维均匀涂有PANI。根据原子力显微镜（AFM）图，涂覆后制成的膜的表面粗糙度从51增加到83，可以改善膜通量和除油率。应力应变测试表明，PA6将PAN垫的抗张强度从3.88 MPa提高到11.86 MPa。掺杂HCl 1M的PAN-PA6 / PANI后处理可以提高膜的亲水性和分离效率。研究了聚合时间对膜孔隙率和孔体积的影响。对于非表面活性剂（己烷/水）乳液分离，发现膜具有高渗透通量（326 Lmh）和排油率（97.8％）的最佳聚合时间为60分钟。研究了该膜在水中分离石油醚，汽油和粗柴油乳液的性能。研究了膜在恶劣条件下的可重复使用性和耐化学性。
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