Abstract
There is at present no rapid, reliable commercial method for determining the molecular weight distribution of polyacrylamides, especially for molecular weights exceeding 5 × 106. Size exclusion chromatography, or SEC, which might be expected to be the method of choice, has molecular weight, polarity, and shear degradation limitations for very high MW polymers.1–5 Recently, we reported a new absolute MWD method for high molecular weight water-soluble polymers based upon the combination of band sedimentation and low-angle laser light scattering, termed S/LALLS.6 The advantages of this new method include applicability for polymers with M = 106 to 108, automatic sample clarification, minimal adsorption problems, no shear degradation, and the use of commercial components. Two other new methods, hydrodynamic chromatography and field-flow-fractionation, have also been developed recently to meet the need for new separation techniques.7,8
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© 1988 Springer Science+Business Media New York
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Holzwarth, G., Soni, L., Schulz, D.N., Bock, J. (1988). Absolute MWD’s of Polyacrylamides by Sedimentation and Light Scattering. In: Stahl, G.A., Schulz, D.N. (eds) Water-Soluble Polymers for Petroleum Recovery. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-1985-7_14
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DOI: https://doi.org/10.1007/978-1-4757-1985-7_14
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4419-3209-9
Online ISBN: 978-1-4757-1985-7
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