聚甲基丙烯酸n，n二甲氨基乙酯聚砜?jī)?nèi)壓型荷正電中空纖維復(fù)合納濾膜的制備及性能

1、分類(lèi)號(hào)：—T00—28膏數(shù)：——甲位代碼：』旦Q翌學(xué)號(hào)天津工業(yè)大學(xué)學(xué)位論文Y866353聚甲基丙烯酸一Ⅳ’臚二甲氨基乙酯／聚砜?jī)?nèi)壓型荷正電中空纖維納濾復(fù)合膜的研究(申請(qǐng)碩士學(xué)位)專業(yè)：研究方向：研究生：指導(dǎo)教師：絲魁堂墊選送鮑劍蚤皇厘旦筮整姐墊旦亟數(shù)撞ABSTRACTInthispaperApositivelychargedcompositernanofiltmtion(NF)membranewasdevelopedbyinterfac

2、iaipolymedzation(quatemization)usingpolysulfone伊SF)ultrafiltrationmembraneassupportmembrane，poly[2(NNdimethylamino)ethylmethacrylate】(PDMAEMA)ascoatingmaterial，andPxylylenedichlorideascrosslinkingagentUsing29／LMgS04aSthe

3、feedliquid，underalloperatingpressureof08MPatheinside—flowhollowfiberNFmembranehasasaltrejectionabove884％，andapermeatingfluxof1775L／m2h；butaplateNFmembranehasasaltrejectionabove965％andapermeatingfluxof242L／m2hThestudycond

4、uctedresearchonthefollowingthreefields：firstly，thecharacteristicsoftheinterfacialpolymerizationsystemofPDMAEMAaqueoussolution／pxylylenedichlorideheptanesolutionweresystematicallyinvestigated，suchaStheagentsaddedintothein

5、terracialpolymerizationsysteminfluenceonthecharacteristicsoftheNFmembraneForinstance，NaHC03canadjustthepHofthePDMAEMAaqueoussolutionandmaintainthemacromoleculeconformationofPDMAEMAwhichcouldenhancethecross—linkingreactio

6、n111eplateNFmembranepreparedaccordingtothiswayhaSasaltrejectionof925％andapermeatingfluxof156L／mZhAdditionally，theturnoffratioofplateandhollowfiberNFmembranehasbeenincreasedThetimeofcrosslinkingreactionCanbeeffectivelyred

7、ucedfrom5hrto35hrbyaddingKIofO172mol／LThePDMAEMAaqueoussolution、viththeethanolof5％(v／v)CandevelophighperformanceNFmembranewithhi【ghersaltrejectionandhigherpermeatingfluxAccordingtotheoverallexperiment，whentheconcentratio

8、nofthePDMAEMAaqueoussolutionisO75％，thecharacteristicofhollowfiberNFmembraneCanbeachievedthebestSecondly，positivelychargedhollowfiberNFmembranehastheselectivitytowardstherejectionsofinorganicsalt，whichCanrcjecttheunivalen

9、tionbelow50％whileitCanrejectthebivalentionabove80％ComparedwiththecommercialNFmembrane，suchasNTR7450，Desal一5，thehollowfibermembranepreparedbyourselveshasthesameevenmorehigherrejectionstowardsMgS04andglucideofsmallmolecule