碳纳米管填充聚酰胺反渗透膜的设计与制备

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1、AbstractWiththegrowingwaterproblem，reverseosmosistechnologyhasbeenmoreandmorewidelyusedinthefieldofwatertreatmentapplication，thereareneededsignificantinnovationsinROmembranefordesalinationwithincreasedwaterpermeabilityforenergysavings，improvedselectivityinmembranese

2、paration，andmorefoulingresistantsurfaces．Aimingatabove-mentionedobjective，inthiswork,pristineMulti．WalledCarbonNanotubes(MWNTs)werefirstlymodified．ThenthefunctionalizedMWNTsintroducedintotheinterfacialpolymerizationprocessforpreparingMWNT-polyamidenanocompositemembr

3、anes,andusedfordesalinationandorganicaqueoussolutionseparation．Mainlyresearchofthethesisincludesthefollowingfouraspects：(1)ThemodificationofMWNTs．ThefunctionalizedMWNTsareobtainedbythetreatmentofpristineMWNTswiththemixedacidofH2S04andHN03(3：lv／v)andSOCl2，respectivel

4、y．TheanalysisresultsshowthattheacidifiedMWNTsdispersemoreevenlyintheaqueoussolution．ComparedtOthepristineMWNTs，theacidifiedMWNTsyieldsomecarboxylgroupsandhydroxygroups，andtheacylcholrideMWNTshavebeengraftedonsomeacylchloridegroups．(2)Studyonpreparationandperformance

5、oftheacidifiedMWNT-polyamidethinfilmnanocompositemembranes．Theresultsoftransmissionelectronmicroscopy(TEM)andFouriertransforminfraredspectrometry(FTIR)demonstratethatthefunctionalizedMWNTspenetratedthroughthepolyamidelayer．Comparedwiththebarepolyamidemembrane，thewat

6、erfluxofMWNT-polyamidemembranesisimproveddramatically．Whilehydratedionrejectiondecreasesobviously,meanwhile，PTArejectionisallhigherthan98％．For20000ppm1-butanolsolutionWastestedat25℃and1．6MPa,thewaterfluxofacidifiedMWNT-polyamidemembraneswithO．1％acidifiedMWNTs(w／v)in

7、theMPD．Watersolutionachieved53．13L／m2·h，whichisalmost2．43timesthatofpurepolyamidemembrane，while1-butanolrejectiondecreaseslightly．TheacidifiedMWNT-polyamidemembraneshavemoreacidandorganicsolutionresistantthanthepurepolyamidemembrane．III翳蝶静≯，，￡《．．；％●L擎，。{§．斧：，》∞，1#，、

8、挚Ⅶ碡；+。址￡；私"《。l鞋f苷l$‰》}}om_矿，，0豁事浙江大学硕士学位论文Abstract(3)StudyOilpreparationandperformanceofacylcholrideMWNT-polyamidethinfilmnanocompositemem