《纳米纤维素》ppt课件

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1、IntroductionofWood-relatedMaterialsResearchinEdinburghNapierUniversity6/29/2021CanTreesTransformOurLife6/29/2021Page2ForestProductsResearchInstituteOneofthenineinstitutesinEdinburghNapierUniversityWorkofexistingCentreforTimberEngineeringseparatedandnewinstituteestablishedin2010Incl

2、udesfourspecialistresearchcentresVariousresourcesfundingprojects(Scottishgovernment,EdinburghNapierUniversity,industrialcompaniesetc)6/29/2021Page3CentresinFPRITwocentresfocusondesignandconstructionofwoodproductsTheWoodStudioCentreforTimberEngineeringTwocentresdealwithwood-relatedm

3、aterialsscienceandchemistryresearchCentreforPlantScienceandBiopolymerResearchCentreforWoodScienceandTechnology6/29/2021Page4NanocelluloseProjectCollaborativeresearchprojectbetweenNapierandSappiFabricationofcellulosenanofibrilsfrompulpsUtilisingcellulosenanofibrils(in-houseandextern

4、al)tomakehighstrengthfibresScaleuptheprocesstoaindustriallevel6/29/2021Page5NanocelluloseProject6/29/2021Page6FinePaper(Graphics)Speciality–ReleasePaperStructureofCelluloseFibres6/29/2021Page7ProcessingofNanoCelluloseMechanicalprocessAcidhydrolysisPurification(removalofunusedstuffa

5、ndpurifytheremaining)Dialysisprocess(adjustpHofcellulosesuspension)(Optional)Counterions(inordertoadjustsurfacecharge)ConcentrationMixingGelstorage(agingeffect)6/29/2021Page8CellulosePowder(MechanicalProcess)6/29/2021Page9PulpshredderShreddedPulpBallMilling250µmwiremeshFilterCellul

6、osePowder6/29/2021Page10CentrifugeCentrifugetoremoveacidandwasteDialysis3-5daystoremovesulphuricacidandincreasepH6/29/2021Page11Centrifugewillbeusedsubsequentlytoadjustzetapotential(counterions)Theconcentrationofthesamplewillbeincreased(gel)Rollmillwillbeusedtofurthermixthegelafter

7、centrifugation/concentrationtoreducethedomainsizeandincreasehomogeneityThegelsamplesarestoredinfalcontubeinfridgesCellulosegels6/29/2021Page126/29/2021Page13ChiralNematicdomainsAimtoalignparticlesunderflowExperimentdesignedtostudyalignmentandultimatelyprocessfibreswithsimilarproper

8、tiesFibreSpinningProcessFa