80电影天堂网,少妇高潮一区二区三区99,jαpαnesehd熟女熟妇伦,无码人妻精品一区二区蜜桃网站

搜索:  
Processing and Properties of Crosslinked Graphene Oxide/Poly( vinyl alcohol) Nanocomposites  
Processing and Properties of Crosslinked Graphene Oxide/Poly( vinyl alcohol) Nanocomposites
資料類型: PDF文件
關(guān)鍵詞: graphene  oxide  poly(vinyl  alcohol)  cross-iinking  structure  properties  
資料大?。?/td> 108K
所屬學科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
Well-dispersedgrapheneoxide/crosslinkedpoly(vinylalcohol)(GO/cPVA)andreducedgrapheneoxide/crosslinkedpoly(vinylalcohol)(rGO/cPVA)hybridmaterialswerepreparedbysolutionblendingandcrosslinkingmethods.BoricacidwasusedasthecrosslinkingagenttointroducechemicalbondbetweengrapheneandPVA.InfraredattenuatedtotalreflectionandRamanscatteringtechniqueswereusedtostudytheinteractionswithintheGO/cPVAhybridmaterials.ThedispersionandaggregationstatesofGOandrGOinPVAwerecharacterizedbySEM.TheresultsshowthatGOcanformhydrogenbondorchemicalcrosslinkingwithPVA,whichresultsinamolecular-leveldispersionstateinthePVAmatrix,whilerGOandPVAforminter-layerstackedstructureduetotheweakinteractionbetweenthem.However,bothmentionedstructureshaveremarkablereinforcementeffectonPVAafterPVAmatrixiscrosslinked.Withtheaddingof0.8wt%contentofGO,elasticmodulusandultimatestrengthofcrosslinkedPVAgelareincreasedupt01500%and270%respectively,while1370%and239%areobtainedforrGOhybridmaterials.ThecrosslinkingbetweenGOandPVAsignificantlyimprovesthethermalstability,whilelayerstackedstructureofrGOwithPVAimprovestheglasstransitionpointofthePVAmatrixbecauseofthemovementrestrictionofPVAchains.ThestudiesonGO/cPVApresentfurtherevidencethatdispersionofnanoparticlesandinterfacestructurebetweennanoparitlcesandmatrixareresponsibleforthenatureofthehybridmaterials.
作者: Y. F. Huang, W. H. Ruad, M. Q. Zhang, M. Z. Rong
上傳時間: 2013-06-26 13:48:17
下載次數(shù): 1
消耗積分: 2  
立即下載:
1人
1人
1人
友情提示:下載后對該資源進行評論,即可獎勵2分。
報告錯誤:  1.下載無效  2. 資料明顯無價值  3. 資料重復存在

相關(guān)評論 共有0人發(fā)表評論 更多評論
你還沒有登錄,無法發(fā)表評論,請首先 登錄 注冊
免責聲明:本站部分資源由網(wǎng)友推薦,來自互聯(lián)網(wǎng),版權(quán)屬于原版權(quán)人,如果不慎侵犯到您的權(quán)利,敬請告知,我們會在第一時間撤除。本站中各網(wǎng)友的評論只代表其個人觀點,不代表本站同意其觀點。