多组分高分子材料(7)

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1、66StrengtheningtheInterfaceStrengtheningtheInterfacePolymer-PolymerPolymer-Filler1MethodsMethodstoStrengthentheInterfacetoStrengthentheInterface6.1Couplingagents:Silanes6.2SpecificInteractions:HydrogenBonding6.3Acid-BaseInteractions6.4Compatibilizatio

2、n:Compatibilizers(Blockorgraftcopolymers,functionalizedcopolymers,ionomers)2SummaryofinterfacialtougheningmethodsModificationatpolymerblendinterphases¢Todecreasetheinterfacialsurfacetension¢Toincreasechainentanglementwithintheinterphase3Sixbasictypeso

3、fpolymerinterphase1.Noblockcopolymerorreactivepolymers.only2-3nminwidth,limitedentanglement,lowadhesionstrength2.Additionofblockcopolymerbrushes.20-30nmwidth,moreentanglement,lowadhesionstrength,strengtheninterfacialadhesion.3.Endgroupmodification.two

4、differentmethods:repulsionorfavorableinteraction.4Sixbasictypesofpolymerinterphase4.Formationofinterpolymercomplexesacrosstheinterphase.strongphysicalbondbetweenthetwopolymers.5.Composites:polymerbrushes.compatibilizingtheinterfacesviafunctionalgroups

5、.6.ω–functionalblockcopolymers.acombinationoftypes2(blockcopolymerbrushes)&3(Endgroup).577SurfacesofAdvancedandSurfacesofAdvancedandCompositeSystemsCompositeSystems6SurfacesegregationinmulticomponentpolymersystemsSurfacesegregation(表面聚集):thediffusiont

6、othesurfaceofathinlayerofonecomponentinapolymerblend,block,graft,orIPNs.Studymethods:XPS,ATR-FTIR,SEM,…7FillerSurfacetreatmentsFillersurfacechemistry:NaturalchemicalsurfacecompositionThesurfaceaftersurfacetreatmentsThesurfaceafterfinishapplication8Org

7、anicOrganic--inorganicpolymerhybridsinorganicpolymerhybridsThreebasictypes:1.Hydrogenbondingbetween…2.Covalentbonding,e.g.,silanereactions3.Combinationof1&2Typesofsurfacesandinterfaces:¢polymerA-polymerBinterface¢polymerA-air¢polymerA–non-polymerinter

8、face1.BasicConceptsI.I.FundamentalRelationships2.Modeling3.FractureBehavior4.BasicPrinciplesandInstruments4.BasicPrinciplesandInstrumentsII.II.PolymerSurfaces5.PolymerChainsatSurfacesand5.PolymerChainsatSurfacesandandInterfacesInterfaces6.Stre