Photo-oxidation behaviour of polypropylene/multi-wall carbon nanotube composites，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

Photo-oxidation behaviour of polypropylene/multi-wall carbon nanotube composites

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关键词：

Photo-oxidation Polypropylene Carbon nanotube Carbonyl index Hydroxyl
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410K

所属学科：

分子表征

来源：

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：

Multi-wallcarbonnanotubes(MW-CNTs)weremeltblendedwithpolypropylene(PP)inordertoassesstheireffectsonthephoto-oxidationbehaviouroftheresultantPP/MW-CNTscomposites.ThemechanicalpropertiesofPP/MW-CNTscompositeswithvariousMW-CNTscontentsweretestedbeforeandafterphoto-oxidation.Resultsshowedthatbeforephoto-oxidation,thetensilestrengthsofthesamplesincreasedwiththeincreaseofMW-CNTscontentswhentheMW-CNTscontentswerelessthan1wt%,whilstthetensilestrengthdecreasedathigherMW-CNTscontents(>1%wt).Whensubjectedtophoto-oxidation,thetensilestrengthsofthesamplesdecreasedwiththeincreasingphoto-oxidationtime.Theresistancetoacceleratedphoto-oxidationofPP/MW-CNTscompositeswasalsocomparedwiththephoto-oxidationbehaviouroftheoriginalpolypropylenesample.Atshortphoto-oxidationtime,suchasunder250h,theratesofcarbonylformationforthePP/MW-CNTscompositesaresimilartothatfortheoriginalpolypropylenebutatlongerphoto-oxidationtimesthecarbonylformationincreasesforlowerMW-CNTscontents(0.1,0.2,0.5and0.8%wt),anddecreasesforhigherMW-CNTscontents(1%and2%wt).ItwasfoundthattheMW-CNTsshowedbothanti-degradationandpro-degradationeffectsatdifferentconcentrations.

作者：

WANG Hongmei, LIAN Yuan, YUAN Lixia, CHENG Qiong

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2010-04-02 13:26:45

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