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Cellulose Based Nanocomposites with Improved Properties Prepared by Selectively Dissolving Plant Cellulose in Ionic Liquids  
Cellulose Based Nanocomposites with Improved Properties Prepared by Selectively Dissolving Plant Cellulose in Ionic Liquids
資料類型: PDF文件
關(guān)鍵詞: cellulose  nanocomposite  lonic  liquids  
資料大小: 123K
所屬學(xué)科: 分子表征
來源: 第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集(2013.6.2-6 武漢)
簡(jiǎn)介:
Duringthepastseveralyears,ithasbeenreportedthatsomeroomtemperatureionicliquids(RTILs)exhibitedpowerfuldissolvingcapabilityforcellulose.RTILsareprovidinganewandpowerfulplatformforcelluloseprocessingandfunctionalization,whichhasbecomethefocusofcellulosechemistryresearchinrecentyearsEi-rl.Inourresentwork,thesolutionmorphologyanddissolutionprocessofcelluloseinRTILshavebeenvisualizeddirectlybyconventionaltransmissionelectronmicroscopy(TEM)atroomtemperature[8].ThestructureevolutionofcelluloseduringitsdissolutioninRTILscanbedividedintofollowingstages:dissolutionofnoncrystallinestructure,swellingandexfoliationcrystallinestructure,anddissolutionofhighlycrystallinecellulosenanofibrils.Basedontheaboveresults,thecellulosenanofibrilsnaturallyexistedinplantcelluloseresourcescanberemainedinfinalregeneratedcellulosematerialsundersuitableprocessingconditions.Therefore,somecellulosebasednanocomposites,suchasall-cellulosenanocomposites,cellulose/starchnanocomposites,arepreparedbycontrollingcellulosedissolution.Duetotheexistenceofcellulosenanofibrils,thesecellulosebasednanocompositesexhibitedimprovedmechanicalproperties.
作者: J. Zhang, J. M. Zhang, N. Luo, J. S. He
上傳時(shí)間: 2013-06-27 13:12:49
下載次數(shù): 1
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