所属单位：化学与化工学院

发表刊物：Journal of Membrane Science

关键字：中文关键字：原子力显微镜；PVDF膜；腐殖酸；膜-腐殖酸界面作用力；界面自由能，英文关键字：Atomic force microscopy；PVDF membrane；Humic acid；M

摘要：The adhesionforcesofmembrane–humic acid(membrane–HA) andHA–HA weremeasuredbyatomic force microscopy(AFM)inconjunctionwithself-mademodified membrane-coatedandHA-coated probes, respectively.Normalized flux declinerateandtheirreversiblefoulingindexoffouling experimentswithHAkeptgoodlinearcorrelationswiththeAFMforcemeasurements.Theextended Derjaguin–Landau–Verwey–Overbeek(XDLVO)theorywasusedtoexplaintheinfluence andregularity of HAsolutionpHandhydrophilicityofpolyvinylidene fluoride (PVDF)ultrafiltration (UF)membrane interface onmembranefoulingbehavior.TheresultsofAFMforcemeasurementsillustratedthatthe adhesion forceinacidicenvironmentwasmuchstrongerthanthatinalkalineorneutralenvironment and theadhesionforceofPVDF/polyvinylalcoholmembrane–HA (PA–HA) wasweakerthanthatofPVDF/ polyvinylpyrrolidonemembrane–HA (PP–HA). XDLVOtheoreticalcalculatedresultsdemonstratedthat the polarcomponentofsurfacetension ðγABÞ of membrane–foulant couldbeeffectivelyincreasedby improvingthehydrophilicityofthePVDFUFmembraneinterfaceandreducingthesolutionacidity, which resultedinthedecreaseofabsolutevaluesofthemembrane–HA interfacialfreeenergyof adhesion ðΔGAD mlf Þ, themitigationofthemembranefoulingrateandtheirreversiblefoulingdegree.The results preliminarilyprovedthatthemeasurementsofmicroscopicinterfacialforceswithmodified AFM colloidal probeshadpotentialapplicationvaluesinUFmembranefoulingbehavior.

备注：SCI

合写作者：唐卫婷,黄丹曦,陈赫男

第一作者：张楠[重名-待确认],王旭东,王磊,孟晓荣

论文类型：期刊论文

卷号：卷：

期号：期：487

页面范围：页：180-188

是否译文：否

发表时间：2015-04-01