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Study on biodegradable nanocomposites of poly(3-hydroxylbutyrate-co-3-hydroxylvalerate) grafting functionalized carbon nanotubes  
Study on biodegradable nanocomposites of poly(3-hydroxylbutyrate-co-3-hydroxylvalerate) grafting functionalized carbon nanotubes
資料類型: PDF文件
關(guān)鍵詞: Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)  Multi-walled  carbon  nanotubes  nanocomposites  Thermal  properties  
資料大小: 599K
所屬學科: 分子表征
來源: 2009先進纖維與聚合物材料國際學術(shù)會議(ICAFPM,10.21-10.24,上海)
簡介:
Theabilitytorendercarbonnanotubes(CNTs)withbiocompatibilityopensupanentirenewandexcitingresearchdirectioninthefieldofbiologicalandbiomedicalengineeringincludingsensing,imagingandscaffoldingforcellgrowth.ThisworkisconcernedwithchemicalmodificationoftheCNTssurfacewithbiologicalcomponents.Wehavepreparedabiocompatiblecompositethroughthecovalentlinkbetweencarboxylicgroupsoffunctionalizedmulti-walledcarbonnanotubes(MWCNTs)andhydroxylgroupsofpoly(3-hydroxybutyrate-co-3-hydroxyvalerate)(PHBV).FT-IRresultsdemonstratedchemicalmodificationwasachievedthroughtheesterificationreaction.TEMshowedthattheMWCNTswerecoatedwithauniformPHBVlayer,andtheMWCNTsexistedasahardbackbone.Thermalanalysisindicatedthatthecrystallizationbehaviorofcompositewasmarkedlyhinderedduetothepresenceofcarbonnanotubes.WiththeincorporationofMWCNTsandPHBV,asignificantincreaseinthethermalstabilityofPHBVwascaused.ThecurvesofTGAshowedthattemperaturedeterminedat5%weightloss(T5%),initialdecompositiontemperature(T0),maximumdecompositiontemperature(Tmax)andcompletedecompositiontemperature(Tf)increasedbytheamplitudeof18℃,19.3℃,20.5℃and36.1℃,respectively,comparedtothoseoforiginalPHBV.
作者: YU Houyong, QIN Zongyi, LIU Qingsheng, ZHANG Tianlu, WU Wenhua, ZHU Meifang
上傳時間: 2010-04-01 11:41:29
下載次數(shù): 17
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