Electrospinning organic solvent resistant preoxidized poly(acrylonitrile)nanofiber membrane and its properties  

作　　者：Zhiwei Du Jinxue Cheng Qinglin Huang Mingxing Chen Changfa Xiao 

机构地区：[1]State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes,Tianjin 300387,China [2]Department of Material Science and Engineering,Tiangong University,Tianjin 300387,China [3]College of Textile and Garments,Hebei University of Science and Technology,Shijiazhuang 050018,China [4]Fiber Materials Research Center,Shanghai University of Engineering Science,Shanghai 201620,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第1期289-299,共11页中国化学工程学报（英文版）

基　　金：supported by the Science and Technology Plans of Tianjin(18PTSYJC00170);the Young Elite Scientists Sponsorship Program by China Association for Science and Technology(YESS20160168);The Analytical&Testing Center of Tiangong University was appreciated.

摘　　要：A high performance preoxidized poly(acrylonitrile)(O-PAN)nanofiber membrane with excellent solvent resistance,thermal stability and flexibility was fabricated by the preoxidation of electrospun PAN nanofiber membrane.The performance of resultant O-PAN nanofiber membrane was optimized by altering the PAN concentration and preoxidation temperature.The results showed that the O-PAN nanofiber membrane which made from PAN concentration of 14%(mass)and preoxidation temperature of 250.0
℃ have a more optimal comprehensive performance.In the long-term separation test of SiO2 particle(1 μm)in DMAc suspension,the permeate flux of O-PAN nanofiber membrane stabilized at 227.91 L·m^(-2)·h^(-1)(25
℃,0.05 MPa)while the SiO2 rejection above 99.6%,which showed excellent solvent resistance and separation performance.In order to further explore the application of the O-PAN nanofiber membrane,the OPAN nanofiber membrane was treated with fluoride and used in oil/water separation process.The O-PAN nanofiber membrane after hydrophobic treatment showed excellent hydrophobicity and good oil/water separation performance with the permeate flux about 969.59 L·m^(-2)·h^(-1)while the separation efficiency above 96.1%.The O-PAN nanofiber membrane exhibited a potential application prospect in harsh environment separation.

关 键 词：Poly(acrylonitrile)(PAN) PREOXIDATION Nanofiber membrane Solvent resistance Oil/water separation 

分 类 号：TQ051.893[化学工程]