摘要
Severalcrosslinkedprotonexchangemembraneswithhighprotonconductivitiesandlowmethanolpermeabilitycoefficientswereprepared,basedonthesulfonatedpoly[(4-fluorophenoxy)(phenoxy)]phosphazene(SPFPP)andnewlysynthesizedwatersolublesulfonatedpoly(cyclophosphazene)(SPCP)containingclusteredflexiblependantsulfonicacids.ThestructureofSPCPwascharacterizedbyfouriertransforminfraredspectroscopy(FTIR)and~1HNMRspectra.ThemembranesshowedmoderateprotonconductivitiesandmuchlowermethanolpermeabilitycoefficientswhencomparedtoNafion117.Transmissionelectronmicroscopy(TEM)resultsindicatedthewell-definedphaseseparationbetweenthelocallyanddenselysulfonatedunitsandhydrophobicunits,whichinducedefficientprotonconduction.IncomparisonwithSPFPPmembrane,theprotonconductivities,oxidativestabilitiesandmechanicalpropertiesofcrosslinkedmembranesremarkablywereimproved.TheselectivityvaluesofallthecrosslinkedmembraneswerealsomuchhigherthanthatofNafion117(0.74×10~5S·s/cm~3).TheseresultssuggestedthatthecSPFPP/SPCPmembraneswerepromisingcandidatematerialsforprotonexchangemembraneindirectmethanolfuelcells.
出版日期
2016年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
