Diffusion Studies on Polystyrene in 1,4-Dioxane-中国期刊网

摘要 Thediffusionbehaviorofpolystyrenewithnarrowmolecularweightdistributionat20℃in1,4-dioxanewasinvestigatedbythephotoncorrelationspectroscopy.Thecumulantmethodwasemployedfortheanalysisoftheintensity-intensityautocorrelationfunctionmeasuredoverawiderangeofthescatteringvector.ThediffusioncoefficientDwasdeterminedasthefunctionofconcentrationCinthemolecularweightrangeof3.0×104-1.20×106.Inalowconcentrationrange,DwasfoundtobelinearlydependentonC,whichhasbeenfoundforsomeothersystems.ThedependenceofDonmolecularweightatinfinitedilutioncanbewrittenasanempiricalformulaD0=kDM-γM,theexponentγ(0.576±0.01)isingoodagreementwiththeresultofthescalingtheory.

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Diffusion Studies on Polystyrene in 1,4-Dioxane

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Diffusion Studies on Polystyrene in 1,4-Dioxane

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