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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이영무 | - |
| dc.contributor.author | 배준용 | - |
| dc.date.accessioned | 2024-03-01T07:31:34Z | - |
| dc.date.available | 2024-03-01T07:31:34Z | - |
| dc.date.issued | 2022.2 | - |
| dc.identifier.uri | http://hanyang.dcollection.net/common/orgView/200000588593 | en_US |
| dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/188194 | - |
| dc.description.abstract | Inthisthesis,adetailedunderstandingofthegasseparationperformancebasedonmolecularstructures,multicomponentsystemofgasseparationmembraneswasdiscussedandefficientwaytopreparethesegasseparationmembraneswassuggestedandinvestigated. InChapter1,theroleoffluorinatedcontentsinTRpolymersfortheirmicroporousstructuresandgasseparationperformancewasinvestigatedbycontrollingfluorinecontentsviaeithercopolymerizationorpolymerblendingapproach.AseriesofTRcopolymersandTRpolyblendsweresuccessfullypreparedviapost-fabricationontheirprecursorofcopolyimidesandpolyimideblends,respectively.Alloftheprecursorpolyimidesexhibitedimide-to-benzoxazolethermalcyclizationreactionaround400oCregardlessofthefluorinatedunitcontentsandpolymerpreparationmethods.MicroporosityandgaspermeabilityofthepolymerswereenhancedbyTRconversionandthepresenceofbulkyhexafluoroisopropylidenemoieties.Furthermore,TRpolymerblendsexhibiteddistinctivethermo-mechanicalpropertieswithtwoseparatedglasstransitiontemperaturesandimprovedgastransportbehaviorscomparedtothecorrespondingTRcopolymerssynthesizedfromthesamestartingmonomers.Inthisstudy,TRpolymerblendscontaining90%fluorinateddiamine,TR-Blend-AH91,showedthehighestgaspermeability(P(CO2)=603Barrer)amongtheTRpolymersinthiswork. InChapter2,anewefficientmethodwasemployedandpracticallyrealizedtopreparemicroporousmembranessuchasthermallyrearranged(TR)andcarbonmolecularsieve(CMS)inawayusinginfrared(IR)irradiation.TheeffectsoftheIRtreatmentconditionsuchastemperature,time,andenvironmentonthethermalconversionofTRandCMSmembraneswereinvestigatedforthefirsttime.ThemembranessubjectedtotheIRfurnaceexhibitedthesamechangesofthechemicalstructureandcomparablegastransportbehaviorsasthemembranestreatedintheelectricfurnace.Surprisingly,thetreatingtemperatureandprocessingtimeofmembraneswerereducedby~100◦Candafactorof~20,respectively,intheIRfurnaceresultfromtheenergy-intensiveradiationandcontrolofinstanttemperature.ByreplacingtheelectricfurnacewiththeIRfurnace,energysavingsbyafactorof~10wereobtainedatthesamethermalconversionrateandconsequently,theoverallproductivitywasimprovedbymorethanafactorof100.TheapplicabilityandadvantagesofefficientIRirradiationonTRandCMSmembranefabricationwereconfirmedinthisstudy.ThisresearchwaspublishedinJournalofMembraneScience613(2020)118477 Lastly,inChapter3aboveresearchesaresummarizedandsuggestionsforthefutureworksregardingmembraneresearchwillbediscussedbasedonmaterialchemistryandposttreatmentsofmembranethatcanimprovemicroporosityandgastransportperformance. | - |
| dc.publisher | 한양대학교 | - |
| dc.title | FabricationandCharacterizationofOrtho-HydroxylCopolyimide-basedMicroporousMembranesforGasSeparations | - |
| dc.type | Theses | - |
| dc.contributor.googleauthor | Bae,JoonYong | - |
| dc.contributor.alternativeauthor | 배준용 | - |
| dc.sector.campus | S | - |
| dc.sector.daehak | 대학원 | - |
| dc.sector.department | 에너지공학과 | - |
| dc.description.degree | Master | - |
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- GRADUATE SCHOOL[S](대학원) > ENERGY ENGINEERING(에너지공학과) > Theses (Master)
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