Abstract
Resolutions of various methods used to determine molecular weight distribution of linear polymers, such as the precipitation chromatography, elution sedimentation velocity, and gel permeation chromatography methods, were compared by determining molecular weight distributions of samples obtained by mixing two samples of monodisperse poly(α-methylstyrene). The sedimentation velocity method showed the double peaks in the molecular weight distributions slightly better than the column fractionation method, and but there was no appreciable difference between the resolution of the elution method and that of precipitation chromatography. However, gel permeation chromatography appears to have much lower resolution than the other methods if no correction for broadening effect is made.
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Yamamoto, A., Noda, I. & Nagasawa, M. Comparison of Various Methods of Determining Molecular Weight Distribution. Polym J 1, 304–311 (1970). https://doi.org/10.1295/polymj.1.304
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DOI: https://doi.org/10.1295/polymj.1.304