含氟聚合物的電紡及其應用研究

1、Y1038231分類號：!Q32：密級：公玨UDC。學號：Q≥!魚2⑨東南大掌碩士學位論文含氟聚合物的電紡及其應用研究研究生姓名：弛復錢導師姓名：奎薤控熬授申請學位級別王堂亟論文提交日期窒QQ璺壘曼啟學位授予單位塞蜜盔堂答辯委員會主席拄星夔麴援學科專業(yè)名稱絲堂王莖論文答辯日期星壘Q壁生璺且旦學位授予日期墊鰻璽旦目評閱人鹽星疆夔授弛拍墼夔攫2006年5月東南大學碩士學位論文AbstractElectrospinninghasbeenfou

2、ndtobenviabletechniquetoproducenanofibersElectrospinningoriginsfromthatelectricallychargedfluidisforcedjetsinthehighvoltageelectrostaticfield1he硒preparedfiberswithdiameterrangingfromtensofnanometerstoseveralmicrometersde

3、positerandomlytoformmatswithporesizeof0110unL1nhcmatswithhighsurfaceareaandporositymaybeappliedin銣麟suchascatalysis。filtrationtissuescaffolds，drugdeliverysystems，protectivetextiles，separatorofcellsInthispapernanofibermats

4、offluoropolymerswerepreparedbyelectmspinningandthestructures，mechanicalproperitieswatercontactanglesofthenanofibermatsforpotentialapplicationonpolymerelectrolytebarrieroflithiumpolymercellswerealsoinvestigatedFluoropolym

5、erswereelectrospunintonanofibermatsfromtheirsolutionsinthemixtureofN，Ndimethylformamide∞MF)andacetoneInfluencefactorswereanalyzedincludingconcentrationofsolution，ratinsofdifferentcomponentsofsolventflowrateanddistancebet

6、weenthecapillarytipandthecollector11lemechanicalproperitiesandhydrophobicitiesoftheelectrpspunfluoroPOlymermembraneswereexaminedTbeconcentrationofsolutionhasasingnficantinfluence011themorphologyoftheaselectrosponfibersTh

7、eresultsshowthatdiameterofthefibersincreasedwiththeconcentrationincreasingThefibermatelectrospunfromsolutionwithmixtureofDM咿andacetonewithvolu腓ratioof8：2hashomogeneousmorphologythallthatfromsolutionwithDⅣ匝usedassolventTh

8、ediameterofthefibersincreasedwi血theincreaseofflowratioThedistancebetweenthecapillarytipandthecollectorhaslittleinfluenceonthemorphologyanddistributionofdiameteroffibersPVDFfibermatshadtensilestrengthofalout20MPaPVDFTFEfi

9、bermatelectrospunfromsolutionwithconcentrationof30％hastensilestrengthof1360lⅢabutthatelectrospunfromsolutionwithconcentrationof20％hastensilestrengthof515MPaAlmostalltheelectrospunPVDFHFPfibermatshavetensilestrengthmoreth

10、an22MPaHydrophobicityoftheeleetrpspunfluoropolymermembraneswasmeasuredproperlyTberesultsrevealthattheelectrospunfluoropolymerfibermatshavethecontactanglesofover1400andhadgoodhydrophobicitieswhichisattributedtothesurfaces

11、tnlctureofnanofibermatsoffluoropolymersNanoporonsnanofibermatsoffluoropolymerwerepreparedbyncombinationofphaseseparationandelectrospianingMorphologiesofthenanoporonsnanofibermatswereobservedindetailbyfieldemissionscannin

12、gelectronmicroscope(FESEM)ThemechanicalpropefitiesofthenanoporousfibermatswerealsomeasuredTheFI三sEMimagesshowtheformationofnanoporesonthesurfaceoffluoropolymernanofibers11IemolecularweightofPVPofporogenplaysanimportantro

13、leonthesurfacestructureofnanoporonsfibersWi吐IthemolecularweightofPVPincreasing，theaveragediameterofnanoporousfibersincreasesNanoporousfluoroPOlymerfibermatswithPVPK30usedasporogenhashighesttensilestrengthnIcnanoporonsfib

14、ermatsOfPVDF冊havesimilartensilestrengthandYoung’smodulusasthecontentofPVPofporogenchangedAprimaryinvestigationwasconductedusingelectrospunfluoropolymerfibermats88electrolytebarriersforlithiumionpolymerbatteriesElectrnspu