Study on biodegradable nanocomposites of poly(3-hydroxylbutyrate-co-3-hydroxylvalerate) grafting functionalized carbon nanotubes，2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）-中国聚合物网,论文下载

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

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Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Multi-walled carbon nanotubes nanocomposites Thermal properties

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分子表征

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2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）

简介：

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

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2010-04-01 11:41:29

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