高分子结晶4上crystallizationofpolym

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1、Chapter7Thecomputersimulationanddataprocessofpolymercrystallization1.Advanceinsimulationofpolymercrystallization2.Software(Matlab,mathcad,origin)为什么要进行计算机模拟实验实际实验和解析理论发生矛盾不能进行的实验的预测国际上限制的实验难以观察的实验现象的教学工艺过程的模拟对实际实验的可能性进行预测ExtensionsoftheAvramiEquationt

2、oVariousPolymerCrystallizationModelsJAMESN.HAY*andZBIGNIEWJ.PRZEKOPDepartmentofChemistry,TheUniversityofBirmingham,BirminghamB152TT,EnglandJ.Polym.Sci.,Polym.Phys.Ed.,1979,17(6),951-9Computermodellingstudiesoftheprogressofcrystallizationinpolymermelts

3、mixedmechanism,volumeshrinkagevariablecrystallinedensitynonrandomnucleation.ItisconcludedthattheAvramiequationisareasonableapproximationtomostofthesesystemsexcept(c).Clearly,thecomputersimulationofpolymercrystallizationasdescribedaboveispotentiallyapo

4、werfultechniqueforassessingmodels.Asusedabove,ithaditslimitations,asthenumberofscanningpointsadoptedwasrestrictedbythecomputationaltime,butwithfasterandmorepowerfulcomputersthistechniquewillbecomemoreaccurateandmoresuccessful.Galeski(1981)simulatedtwo

5、-dimensionalandthree-dimensionalspherulitegrowthandshowedtheAvramiexponent,thespherulitesizedistributionsandmorphologyfordifferentnucleationmodes.ComputersimulationshowedthatthetypeofprimarynucleationinfluencesnotonlytheAvramiexponentbutalsothespherul

6、itesizedistribution.E.Pineda,T.Pradell,etal.(2001)