Abstract
A correlation equation is obtained for the evaluation of the average molecular weight (MW) of hydroxyethyl starches from the self-diffusion coefficient D measured using diffusion-ordered NMR spectroscopy. Correlation equations MW = cD −α are compared for hydroxyethyl starches, dextrans, and pullulans. It has been demonstrated that different MWs correspond to constant D values of uncharged polysaccharides with the similar type of nonvalent interactions and different degrees of branching.
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Original Russian Text © N.E. Kuz’mina, S.V. Moiseev, V.I. Krylov, V.A. Yashkir, V.A. Merkulov, 2015, published in Zhurnal Analiticheskoi Khimii, 2015, Vol. 70, No. 1, pp. 30–36.
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Kuz’mina, N.E., Moiseev, S.V., Krylov, V.I. et al. Determination of the average molecular weight of hydroxyethyl starches by diffusion-ordered NMR spectroscopy. J Anal Chem 70, 32–38 (2015). https://doi.org/10.1134/S1061934815010086
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DOI: https://doi.org/10.1134/S1061934815010086