May 28, 2023
Hamed Salimi-Kenari

Hamed Salimi-Kenari

Degree: Assistant professor
Education: Ph.D in Polymer Engineering
Phone: 01135305105
Faculty: Faculty of Engineering and Technology


Title Fabrication of a PAN–PA6/PANI membrane using dual spinneret electrospinning followed by in situ polymerization for separation of oil-in-water emulsions
Type Article
membrane; polyacrylonitrile; Polyamide 6; dual spinneret electrospinning; polyaniline coating; Oil/Water emulsion separation
DOI 10.1039/d0nj03231j
Researchers Mahdi Faraji (First researcher) , Seyed Reza Nabavi (Second researcher) , Hamed Salimi-Kenari (Third researcher)


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 nonsurfactant (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.