Abstract
A detailed theoretical comparison between the efficiencies of the analytical successive solutional fractionation (SSF) and analytical successive precipitational fractionation (SPF) was made under various conditions of the average molecular weight of original polymers, the molecular weight distribution (MWD), the initial polymer volume fraction, and the total number of fractions by using a computer simulation technique. The results were compared with the experimental results obtained for an atactic polystyrene solution in methylcyclohexane. The limit of applicability of the Schulz method and Kamide methods as analytical procedures was obtained.SSF proved successful for evaluating the total profile of MWD of the original polymer. In particular, the combination of SSF with the Kamide method furnished the most accurate procedure for evaluating MWD curve of the original polymer under ordinary conditions. The operating conditions suitable for determining Xw/Xn of the original polymer were, however, extremely limited as compared with those in the preparative fractionation.
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Miyazaki, Y., Kamide, K. Analytical Successive Solutional Fractionation of Macromolecules. Polym J 9, 61–71 (1977). https://doi.org/10.1295/polymj.9.61
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DOI: https://doi.org/10.1295/polymj.9.61
