Tracketching technique in membrane technology.pdf

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1、RadiationMeasurements34(2001)559–566www.elsevier.com/locate/radmeasInvitedtalkTracketchingtechniqueinmembranetechnologyP.Apel∗FlerovLaboratoryofNuclearReactions,JointInstituteforNuclearResearch,141980Dubna,RussiaReceived28August2000;receivedinrevisedform24January2001;accepted19March2001Abstra

2、ctTrackmembrane(TM)technologyisanexampleofindustrialapplicationoftracketchingtechnique.Track-etchmembraneso0erdistinctadvantagesoverconventionalmembranesduetotheirpreciselydeterminedstructure.Theirporesize,shapeanddensitycanbevariedinacontrollablemannersothatamembranewiththerequiredtransporta

3、ndretentioncharacteristicscanbeproduced.TheuseofheavyionacceleratorsmadeitpossibletovaryLEToftrack-formingparticles,angledistributionofporechannelsandporelengths.Sofarthetrackformationandetchingprocesshasbeenstudiedinmuchdetailforseveralpolymericmaterials.Todayweunderstanddeterminingfactorsan

4、dhavenumerousempiricaldataenablingustomanufactureanyparticularproductbasedonpolyethyleneterephthalate(PET)orpolycarbonate(PC)7lms.Poreshapecanbemadecylindrical,conical,funnel-like,orcigar-likeatwill.Anumberofmodi7cationmethodshasbeendevelopedforcreatingTMswithspecialpropertiesandfunctions.App

5、licationsof“conventional”trackmembranescanbecategorizedintothreegroups:process7ltration,cellculture,andlaboratory7ltration.Theuseinbiologystandsoutamongotherareas.Nucleartrackpores7nddiverseapplicationsasmodelsystemsandastemplatesforthesynthesisofmicro-andnanostructures.c2001ElsevierScienceL

6、td.Allrightsreserved.Keywords:Nucleartracks;Polymers;Chemicaletching;Membranes1.Introductionarea,fromspecialfeaturesoftracketchingtomodelingofbiologicalionchannels.PayingtributetothepioneeringTheuseofnucleartracksfortheproductionofporousworks,wehavealsoselectedforthisreviewanumberofmembranesw

7、asproposedalmostimmediatelyafterthedis-recentreportsfromdi0erentlaboratories,whichillustratescoveryofparticletracketchinginthinsheetsofmateri-aworldwidespreadofthetechnology.als(Fleischeretal.,1964).Thisachievementbecameanindustrialtechnology