超滤膜的功能化及其性能的研究

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1、天津大学硕士学位论文超滤膜的功能化及其性能的研究姓名：郑丽利申请学位级别：硕士专业：化学工艺指导教师：苏延磊20090601ABSTRACTAsagreenandenergy—efficientseparationtechnology,ultrafiltrationisusedinindustrialapplicationfieldsmoreandmore．Ultrafiltrationmembranesplayanimportantruleofseparationasonepartofthefiltration．Therearemoreandmoreresearc

2、hesabouttheintellectualizationandthefunctionalizationofultrafiltrationmembraneatpresent．Inthisdissertation，thestimulativeresponsibility,responsefunctionandadsorptionfunctionoftheself-madeuitrafiltrationmembranewerestudied．Atthesametime，membranefoulingconstitutesabottleneckofultrafiltra

3、tiondevelopment，andinthisdissertation，theunti-foulingofthemembranewasstudiedalso．Themembranehadlotsofcarboxyliciongroupsthroughhydrolyzingtheself-madePANultrafiltrationmembraneintheNaOHsolution．ThenthehydrophilicityandthestimulativeresponsibilitytotheextemaienvironmentofthehydrolyzedPA

4、Nmembranewerestudied．ThedataofstaticcontactangleshowedthatthehydrophilicityofhydrolyzedPANmembraneimproved．ThepurewaterfluxofhydrolyzedPANmembranedecreasedunderhighpHvalue，andincreasedunderlowpHvalueandsaltsolution．TherangeofwaterfluxwasreversibleunderthepHvalueandwasirreversibleunders

5、altsolution．ThereactionfunctionalizedultrafiltrationmembranewasmadethroughimmersingthehydrolyzedPANmembraneintoAgN03andNaHB4solutionrespectively,thentheAgparticlewasreducedontohydrolyzedPANmembrane．Thereactionfunctionalizedultrafiltrationmembranewasusedtocatalyticreducethe4-nitrophen01

6、．Theexperimentalresultsindicatedthattheself-madereactionfunctionalizedmembranehadcatalyticactivityandcouldreducethe4-nitrophenolinto4-aminophen01．ButthecatalyticreactionhadadisadvantagethatthereactionconverSiondecreasedgraduallyfromthe100％to20％alongwiththetime．Thisphenomenonneededfurth

7、erstudy．WehavemadethePESultrafiltrationbetweenPESmembraneandmethylenebluemembraneandstudiedtheadsorption(MB)．PESuitrafiltrationmembranecanadsorbMBmoleculebecauseoftheelectrostaticinteractionbetweenthenegativePESultrafiitrationmembraneandthepositiveMBmolecule．Theresultsofstaticadsorpt