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1、EH1MaterialsScienceandMetallurgyIB-CourseE:SoftMaterialsEH1___________________________________________________________________________NaturalSciencesTriposPartIB:MaterialsScienceandMetallurgyCourseE:SoftMaterialsDrJamesElliottCourseoutline(10lectures)Introduction:Whataresoftmaterials?W
2、hyaretheyofinteresttomaterialsscientist?Examplesofsoftsystems:polymers,foams,granularmedia,colloids,andliquidcrystals.Polymersandpolymerchains.Somecommonexamples,market,comparativecosts,applications.Somedefinitions.Typicalbackbones,sidegroups,branching,crosslinking.Thermoplasticsandthe
3、rmosets.Moleculararchitecture.Structuralisomerism,configurationalisomerism.Tacticity.Copolymers.Semicrystallinepolymers.Factorsinfluencingcrystallisation,crystalstructures,spherulites.Measurementofcrystallinity,X-raydiffraction.BraggandScherrerequations.Influenceofstructureonmeltingpoi
4、nt.Amorphouspolymers.Chainconformations,chaintorsion,thermodynamicsofchainsIntroductiontodifferentialscanningcalorimetry.Theglasstransition:influenceofstructure,determinationofTg,effectoftimescale.Chainalignmentandbirefringence.Hermansorientationfunction.Howarepolymersmade?Chaingrowth(
5、byaddition):initiation,propagation,termination.Functionality.Stepgrowth.Statisticsofstepgrowth.Molecularmass:definitionsandmeasurement.Cross-linking:heavilycross-linkedthermosetsandvulcanisationofrubbers.Characterisationofpolymersbyinfra-redspectroscopyandmassspectrometry.Polymersinuse
6、.Structuralinfluencesonproperties.Stiffnessandyielding.Basictechniquesforpolymerprocessing.Copolymersandblends.Complexphasebehaviourofamphiphiliccopolymers,andmethodsforprobingstructureinpartiallyorderedphases.Someapplicationsinpharmaceuticalandcosmeticindustries.Cellularstructures(foa
7、ms).FormationandOstwaldripening.Surfacetensioneffects.TheYoungandYoung-Laplaceequation,Plateau’srulesandfoamstructure.Mechanicalbehaviourofregularfoams.TheVoronoitessellationandtherelationshipbetweencellularstructureandgranularpacking.Granularmaterials(powders).Particlepackingasafunc
