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Coated Methacryl Polyhedral Oligomeric Silsesquioxane onto Multi-walled Carbon Nanotube and Its Polymeric Composites  
Coated Methacryl Polyhedral Oligomeric Silsesquioxane onto Multi-walled Carbon Nanotube and Its Polymeric Composites
資料類型: PDF文件
關鍵詞: carbon  nanotube  poss  coating  
資料大小: 102K
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:
Theaggregationofcarbonnanotubes(CNTs)inpolymercomposites[l]makesitthemajordrawback,whichmaypreventefficientstressfromtransferringtoindividualnanotubesandhaveabadinfluenceondemonstratingitsfunction.Sofar,oneofthedominantmethodstofunctionalizeCNTsistointroducecarboxylicacidgroupsontothesurfaceofCNTsvianitricacidoxidationandthenconvertthemintootherfunctionalgroupsifneededc2-3].Itpossessesseveraldisadvantages,suchascorrosionandhighpollution,weight-decreaseofproduct,damageofCNTs.TwokindsoffacilemethodwereappliedtomodifyCNTswithoctamethacrylpolyhedraloligomericsilsesquioxane(POSS).First,byusingtheradicalinitiator,POSScoatedCNTshybridsweresynthesizedunderhomogeneousandheterogeneouspolymerizationsystem,respectively.ThePOSScoatedCNThybridswithuniformthicknesswereobtainedunderthehomogeneoussystem.ThethicknessofPOSSlayercoatedonCNTcanbecontrolledfrom15-25t035-50nm.Second,theCNTsbasedinitiatorofatomtransferradicalpolymerization(ATRP)weresynthetizedbyusingaDiels-AlderreactionbetweenCNTsandfurfuryl-2-bromoisobutyratethatwasobtainedviaesterificationreaction.TheCNTs-initiatorwithcontrolledgraftedcontentbychangingtheconditionsoftheDiels-AlderreactionwasusedtosurfaceinitiatedthepolymerizationofPOSSonCNTssurface.WesucceededincontrollingthethicknessofPOSSwhichisgraftedonCNTsbycontrollingthegraftingdegreeofCNTs-initiator.ThemultifunctionalmoleculescoatedCNTshavebettercompatibilitywithotherpolymermatrixanditprovidesapotentialapplicationforthepreparationofcompositematerials.
作者: G. X. Chen, D. Sun, W. Zhang, Y. Ren, Q. Li
上傳時間: 2013-06-28 14:28:39
下載次數: 1
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