Abstract
A new method for the evaluation of multimodal molar mass distributions W(M) from sedimentation equilibrium measurements of polymers in solutions is proposed. The methods is based on the determination of the experimental measured reduced concentration profile (interference optic) or reduced concentration gradient profile (Schlieren optic) by extrapolation to zero concentration, and subsequent direct calculation of the molar mass distribution by nonlinear regression of the integral equation. The procedure is tested with different polystyrenes and sodium polystyrene sulfonate.
This is a preview of subscription content, log in via an institution to check access.
Preview
Unable to display preview. Download preview PDF.
References
Fujita H (1962) Mathematical Theory of Sedimentation Analysis. Academic Press, New York
Fujita H (1975) Foundations of Ultracentrifugal Analysis. Wiley, New York
Scholte ThG (1968) J Polym Sci A2, 6:91, 111
Scholte ThG (1970) Eur Polym J 6:51
Greschner GS (1984) Eur Polym J 20:475
Diff DR (1973) J Polym Sci, Polym Symp 43:219
Mächtle W, Klodwig U (1979) Makromol Chem 180:2507
Lechner MD, Mächtle W (1991) Makromol Chem 192:1183
Klodwig U, Mächtle W (1989) Coll Polym Sci 267:1117
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1991 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
About this paper
Cite this paper
Lechner, M.D., Mächtle, W. (1991). A new procedure for the determination of the molar mass distribution of polymers in solution from sedimentation equilibrium. In: Borchard, W. (eds) Progress in Analytical Ultracentrifugation. Progress in Colloid & Polymer Science, vol 86. Steinkopff. https://doi.org/10.1007/BFb0115008
Download citation
DOI: https://doi.org/10.1007/BFb0115008
Published:
Publisher Name: Steinkopff
Print ISBN: 978-3-7985-0910-8
Online ISBN: 978-3-7985-1683-0
eBook Packages: Springer Book Archive