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Syndiotactic Polystyrene/Carbon Nanotube Composites

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PDF文件

關(guān)鍵詞：

composites syndiotactic polystyrene carbon nanotube

資料大小：

108K

所屬學(xué)科：

分子表征

來(lái)源：

第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集（2013.6.2-6 武漢）

簡(jiǎn)介：

Inrecentyears,polymer/inorganicnanocompositeshavereceivedmuchattentionduetotheiruniquestructure,excellentpropertiesandvariousapplications.cl]Here,weintroducetherecentworkofsyndiotacticpolystyrene(sPS)/multi-walledcarbonnanotube(MWCNT)compositesinourresearchgroup.First,aneffectivedispersingsolventofN-methyl-2-pyrrolidinone(NMP)wasemployedinthepreparationofsPS/MWCNTcomposites.Thecrystallizationbehaviorsandthepropertiesofthecompositeswerestudiedaswell.TheresultsshowthattheMWCNTsincreasedthesPScrystallizationtemperature,broadenedthecrystallitesizedistributionandfavoredtheformationofthermodynamicallystable(3crystals.Additionally,thesPS/MWCNTcompositesexhibiteddramaticallyincreaseelectricalconductivityandthermalstabilityrelativetotheneatsPSduetothewelldispersionofMWCNTsinthepolymermatrixE21.Later,westudiedtheorientationstructuresoftheunaxiallyhot-drawnsPS/MWCNTnanocompositefilms.TheinfrareddichroismstudiesshowedthattheMWCNTshadanobvioushindranceeffectonthepreferredparallelorientationforboththemainchain(-CH2-segments)andthesidegroups(benzenerings)ofthesPS.Alternatively,theresultsofpolarizedRamanspectroscopydemonstratedthepreferredparallelorientationoftheMWCNTsparalleledtotheuniaxialstretchingdirectioninthestretchedfilmsc3,4].Subsequently,weobservedcomplexflower-likepatternsforthehot-pressedsPS/MWCNTcompositefilmsc5].Veryrecently,anin-situFTIRspectroscopicmethodbasedoncurefittingwasemployedtostudythemesomorphicbehaviorinthesPS/MWCNTnanocompositefilms.

作者：

Y. Feng, G. M. Chen

上傳時(shí)間：

2013-06-25 13:09:33

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