【7A文】胶体化学专业英语.ppt

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1、ColloidChemistry（胶体化学专业英语）ContentChapter1.ColloidandInterfaceChemistryChapter2.SedimentationanddiffusionandtheirequilibriumChapter3.OsmoticPressureandDonnanEquilibriumChapter4.TheRheologyofDispersionsChapter6.SurfaceTensionandContactAngleChapter7.AdsorptionfromsolutionandmonolayerformationCha

2、pter8.ColloidalstructuresinsurfactantsolutionChapter9.AdsorptionatGas-SolidinterfaceChapter10.wanderWaalsForcesChapter11.ElectricaldoublelayerandDoublelayerinteractionsChapter12.ElectrophoresisandotherelectrokineticphenomenaChapter13.Electrostaticandpolymer-inducedcolloidstabilityChapter1.Col

3、loidandInterfaceChemistry1.1ColloidChemistry1.Colloid（胶体）?Colloid：Adispersionoftheparticlethathassomelineardimensionbetween1and1000（100）nm.Definitionofdispersion：Dispersion（dispersionsystem)dispersedphase(分散相)continuousphase(连续相)ordispersionmedium(分散介质)Anysolid,liquidandgascanbeasadispersedph

4、aseorcontinuousphase.2.Classificationofdispersions(分散体系分类)Truesolution(分子分散体系):Thereisnotinterfacebetweendispersedphaseanddispersionmedium.Colloiddispersion(colloidsolution)(胶体分散体系:Lineardimensionofparticlesisbetween1and1000（100）nm.Coarsedispersion(粗分散体系):Dimensionofparticles>1000nm.3.Classif

5、icationofcolloids(胶体体系分类)Lyophiliccolloids（亲液胶体）ColloidsLyophobiccolloids（憎液胶体）Colloidsareclassifiedonthebasisoftheaffinityofthesurfaceoftheparticlestothecontinuousphase.Lyophilic(solventloving）orhydrophilic(wateristhemediumorsolvent)Lyophobic(solventfearing）orhydrophobic(wateristhemediumorso

6、lvent)(1)Lyophiliccolloids:MacromolecularsolutionPolymersolution.B.Micelle(胶束、胶团)solutionMicellesareclusters（团、束）ofsmallmoleculesthatformspontaneously（自发的）inaqueoussolutionmostly.Micellesolutionisoftencalledassociationcolloids（缔合胶体）.TypeofmicelleCylindricalmicelleBilayerBilayervesicleInverted

7、micelleMicrotubuleWhy?A.Thesizeofmacromoleculesandmicellesisintherangeof1-1000nm.B.Thereisnotinterfacebetweendispersedphaseandcontinuousphase.Thesolutionisstablethermodynamiclly（热力学）.C.Propertiesofthesolutionslikecolloids.suchasoptical（光学的）,r