1、天津工業(yè)大學(xué)碩士學(xué)位論文納米材料改性PVDF超濾膜及其應(yīng)用性研究姓名：朱愉潔申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：環(huán)境工程指導(dǎo)教師：文晨20081201AbstractThemembranetechnologyhasbeenpaidmoreandmoreattentionformanyadvantages，suchaslessenergycost，easyoperationandhighseparationefficiencyHoweverthefo

2、ulingofmembraneisadifficultproblemduringtheapplicationofmembraneAsthemembranematerial，polyvinylidenefluoride(PVDF)hasbeenwidelyusedinseparationindustrybecauseofhi【ghchemicalstability，thermalstabilityandSOonNevertheless，i

3、tsusageinwatertreatmenthavemetgreatlimitationsduetostronghydrophobicpropertyandfoulingofmembraneConsideringtheproblemsabove，theideaoforganic／inorganicmodifiedmembranebynanoTiOzwaspresentedTheresultsshowedthatnotonlythese

4、parationperformanceofmodifiedmembranebutalSOtheuntifoulingcapacityofthemwereraisedThestudyshowedthattheseparationperformanceofmodifiedmembranehasbeenincreasedThe“waterfluxandBSArejectionwere1467L／m2h(TMP=010Mpa)and919％(m

5、embranecompositedby210mg／Lnano—Ti02aqueousS01)，fluxrecoveryratewasnearly92％，surfacecontactangleandroughnesswerelowerthantheseofPVDF39oand539％，respectivelyThevalueofhybridmembrane(membranehybridedby01wt％nanoTi02DMAcs01)we

6、re164OL／mZhand987％，fluxrecoveryratewasabove99％，surfacecontactangleandroll【ghnesswerelowerthantheseofPVDF350and431％，respectivelyFurthermore，thecompatibilityofPVDF／DMAc／Ti02DMAcSO!hybridmembranecastingsolutionWasbetterThes

7、eparationperformanceofmembranemodifiedbyTiozsolWasobviouslybetterthanthosemodifiedbyTiOzcommercialnanoTi02powderTherefore，theresultsaboverevealedthatthechoiceofnanoTi02solcouldchangethephysicalandchemicalpropertiesofPVDF