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- W1504224128 abstract "Abstract The dynamical region of the measured calibration curves is investigated using the results of the theory published previously. The kinetic constants of the flow‐equilibrium are calculated from the measurements according to two different models for a spontaneous polymer diffusion of the transported P ‐mer from sol into gel of the Phase Distribution Chromatography (PDC)‐column. The corresponding lateral concentration profiles in the gel are found by analytical integration of Fick's second law under the corresponding boundaries. An energetic model of this flow‐equilibrium is stated, giving the activation enthalpy and ‐entropy of the rediffusion of the polymer from gel into sol after some retardation time in the gel. The influence of the gel mass of the column on its resolution is briefly investigated. Since the measurements show that the resolution of the PDC‐column vanishes in the vicinity of the theta point, spreading phenomena in the column can be investigated by means of analysis of the corresponding PDC elution curves. The results give a basis for the numerical computation of the molecular weight distribution of narrowly distributed polystyrenes from PDC elution curves at sufficiently low column temperatures. The PDC‐separation effect is opposite to that of gel permeation chromatography (GPC)." @default.
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- W1504224128 date "1981-10-01" @default.
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- W1504224128 doi "https://doi.org/10.1002/macp.1981.021821029" @default.
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