首页|The robust design of PMIA braided tube reinforced PFA hollow fiber membranes with graphene doping for water-in-oil separation
The robust design of PMIA braided tube reinforced PFA hollow fiber membranes with graphene doping for water-in-oil separation
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The robust design of PMIA braided tube reinforced PFA hollow fiber membranes with graphene doping for water-in-oil separation
In order to solve the problem of oily wastewater,the poly(m-phenyleneisophthalamide)(PMIA)braided tube reinforced(PBR)poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether)(PFA)hollow fiber membrane with thermal and solvent resistant property was prepared via no-solvent green method.The membrane surface and pore structure was optimized by changing the sintering temperature and gra-phene(GE)content.The morphologies showed that the spherical surface with good lipophilicity was formed,and the excellent mechanical strength with a favorable interface bonding state could be obtained due to the PFA melts permeating into the supporting layer.The doping of GE produced synergistic effects with the sintering temperature owing to its good thermal conductivity and pore formation.The PBR-PFA/GE hollow fiber membrane exhibited good hydrophobicity and lipophilicity with more than 97％sepa-ration efficiency for different oil products at-0.02 MPa.With the addition of GE,the average pore size first increases and then decreases,and the porosity gradually decreases.In addition,the hollow fiber membrane showed high separation ability to the water-in-oil emulsion,and maintained a stable flux recovery rate after recycling,making it possible to apply in the field of oily wastewater treatment.
School of Materials Science and Engineering,and State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387,China
CAS Key Laboratory of Bio-inspired Materials and Interfacial Science,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China
Fiber Materials Research Center,School of Textiles and Fashion,Shanghai University of Engineering Science,Shanghai 201620,China
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