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Electroactive Responsive Shape Memory Effect of Carbon Nanotubes Enhancing Polyvinyl Alcohol Nanocomposites  
Electroactive Responsive Shape Memory Effect of Carbon Nanotubes Enhancing Polyvinyl Alcohol Nanocomposites
资料类型: PDF文件
关键词: Shape  memory  PVA  Nanocomposites  CNT  
资料大小: 74K
所属学科: 通用高分子材料
来源: 来源网络
简介:
Inthepastdecades,shapememorypolymers(SMPs)haveattractedmoreattentioninthefieldofmicro-mechanicalsystemsandmedicaldevicesduetolight-weight,processability,andlow-cost.Recently,thermalresponsivepolyvinylalcohol(PVA)basedSMPshasbeenpreparedmourresearchteam.However,thistypeofSMPsisoftenlimitedintheapplicationduetoexternalheatsourcerestriction.Inthispaper,electroactiveresponsivePVASMPswerepreparedinordertoovercomethisproblem.PVAnanocompositeswerefabricatedwithdifferentcontentsofAMWNTsviatransitionalsolutioncastingandultrasonictreatment.ElectroactiveresponsivebehaviorsofPVA/AMWNTsnanocompositeswereinvestigated.ElectricalconductivityofPVA/AMWNTsnanocompositeswascharacterizedviafour-probemethodanddigitalhigh-resistivitydeterminer.Electricalconductivityofnanocompositeswithlessthan5wt%AMWNTsisextraordinarilylow,andtheconductivityincreasestoahighandstablelevelwiththeincreaseofAMWNTscontent.Theconductivityofnanocompositeswith10wt%AMWNTsincreases10-3S.mandtheshaperecoveryofthenanocompositescouldbetriggeredcompletelywhenapplyingavoltageof120Vtothepredeformedparts.AsthecontentofAMWNTsincreases,thedrivingvoltagedecreases.
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