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1、第28卷第2期环境科学Vol.28,No.22007年2月Feb.,2007ENVIRONMENTALSCIENCE有机膜的无机改性及其性能研究1,21331芦艳,于水利,孙先达,蔡报祥(11哈尔滨工业大学市政与环境工程学院,哈尔滨150090;21大庆石油学院化学化工学院,大庆163318;31大庆勘探开发研究院,大庆163012)摘要:以无机纳米氧化铝粒子作为无机添加剂与聚偏氟乙烯(PVDF)共混,采用相转换法合成了有机2无机共混超滤膜.通过测定膜与纯水的接触角,表征膜的亲水性;用激光共聚焦显微镜(CLSM)、扫描电镜(SEM)和透射电镜(TEM)观
2、察了膜的表面结构、表面孔分布和断面孔的结构及纳米颗粒在膜中的分散情况;利用杯式超滤装置对改性膜的透过性能、截留性能以及抗污染性能进行了测试;用强度测定仪测定了膜强度.结果表明,纳米Al2O3的加入改善了PVDF膜的表面亲水性、通量、强度和抗污染性.关键词:聚偏氟乙烯(PVDF);纳米Al2O3;超滤;膜污染中图分类号:X70313文献标识码:A文章编号:025023301(2007)0220371206ResearchofPerformancesfortheOrganicMembraneModifiedbyInorganicMaterial1,2131L
3、UYan,YUShui2li,SUNXian2da,CAIBao2xiang(11DepartmentofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;21DepartmentofChemistry,DaqingPetroleumInstitute,Daqing163318,China;31DaqingOilFieldE&PResearchInstitute,Daqing163012,China)Abstract:Nano2sized
4、aluminaparticlesasinorganicadditiveweredispersedinthepoly(vinylidenefluoride)uniformlytoprepareorganic2inorganiccompositemembranes.Contactanglebetweenwaterandthemembranesurfaceweremeasuredbycontactanglemeasurementinordertocharacterizethehydrophilicitychangingofthemembranesurface.
5、Themembranesurfacestructures,porousdistributiononthemembranesurface,thecross2sectionalstructuresandnanometerparticlesdistributionwereexaminedbyconfocallaserscanningmicroscopy(CLSM),scanningelectronmicroscopy(SEM)andtransmissionelectronmicroscopy(TEM)respectively.Membranepropertie
6、swerecharacterizedbyultrafiltration(UF)experimentsintermsofwaterfluxandantifoulingproperties.Membranesmechanicalperformancesweremeasuredbyomnipotenceelectronicintensitymeasuringinstrument(W256).ExperimentsindicatethatAl2O32PVDFcompositemembranesexhibitsignificantdifferencesinsurf
7、acehydrophilicityproperties,flux,andintensityandantifoulingperformancesduetonano2sizedparticlesaddition.Keywords:ploy(vinylidenefluoride);nano2sizedAl2O3particles;ultrafiltration;membranefouling随着膜分离技术的不断发展,膜污染成为目前10nm);阴离子表面活性剂;50%(重量)乙醇水急需解决的制约膜技术进一步推广的主要问题之溶液.一.而解决膜污染的重要途径之一是膜
8、的改性.有机112膜的制备膜改性的主要方法有共混、共聚和表面活性剂改性将聚偏氟乙
