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Multifunctional Films Composed of Carbon Nanotubes and Cellulose  
Multifunctional Films Composed of Carbon Nanotubes and Cellulose
资料类型: PDF文件
关键词: cellulose  carbon  nanotubes  multifunctional  composites  sensors  
资料大小: 102K
所属学科: 分子表征
来源: 第六届亚欧研讨会上处理和性能增强聚合物会议文集(2013.6.2-6 武汉)
简介:
Theuseofintelligentmaterialswhicharecapableofreactingtoexternalstimuliisgrowinginmanyfields.Especially,functionalmaterialsbasedonrenewablebioresourcesandenwronmentallyfriendlyprocesseshaveattractedconsiderableattention.Byusingalkaline/ureaaqueoussolutionasasolvent,ahomogeneousdispersionofmulti-walledcarbonnanotubes(CNTs)andcelluloseinaqueoussystemwasobtained.ItprovidesaplatformtoprepareCNT/cellulosecompositessuchasfilms,fibres,foamsandsoon,throughasimple,efficientandenvironmentalfriendlyprocess.TheCNT/cellulosecompositefilmsfabricatedfromthisprocessareflexibleandhavethepotentialasbio-basedmaterials.UniformdispersionofCNTs,incombinationwithfavourableCNT-cellulosematrixinteraction,causesthebetterductilityandhighertoughnessofthematerials,aswellastheenhancedthermalstability.ThenetworkformationoftheCNTsincellulosematrixnotonlyintroducedgoodconductivitytothematerials,butalsoledtotheimpressivemultifunctionalsensingabilitiestotensilestrain,temperatureandenvironmentalhumidity.Especially,thefractionalresistanceofthecompositefilmsexhibitshighlylinearandrepeatablecorrelationtotensilestrain,indicatingtheirexcellentsensingabilityasstraingages.Furthermore,theseelectricallyconductiveCNT-cellulosecompositefilmscanserveashighlysensitive,wellreversibleandreproduciblesensorsforliquidwater,whichcanbewidelyusedinmanyfieldssuchasdetectionofwaterleakagesandwatercontentdetermination.Ontheotherhand,italsooffersapotentialwaytoinvestigatetheswellingmechanismofcellulose-basedmaterialsinliquidwaterandorganicsolvents.
作者: H. Qi, J. Liu, S. Gao, E. Mader
上传时间: 2013-06-28 16:44:55
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