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Study on biodegradable nanocomposites of poly(3-hydroxylbutyrate-co-3-hydroxylvalerate) grafting functionalized carbon nanotubes

資料類型：

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關鍵詞：

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

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