Abstract
INVESTIGATIONS of the viscosities of dilute solutions of cellulose derivatives1,2 over a range of temperature have shown that the pre-exponential term A and the apparent activation energy of viscous flow Q in the viscosity-temperature relationship: 
where η is the viscosity, depend on both the concentration c of the polymer and its molecular weight M. (Q − Q0), where Q0 is the value for the solvent, is generally a linear function of c in the range 0.1–0.4 gm./dl. and is a function of M. The value of A generally decreases with increase of both c and M and − log A is a linear function of c and a more complex one of M.
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References
Moore, W. R., and Brown, A. M., J. Colloid Sci., 14, 1 (1959).
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Flory, P. J., Principles of Polymer Chemistry, 622 (Cornell Univ. Press, Ithaca, New York, 1953).
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MOORE, W. Viscosity-Temperature Relationships for Dilute Solutions of High Polymers. Nature 191, 1292–1293 (1961). https://doi.org/10.1038/1911292b0
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DOI: https://doi.org/10.1038/1911292b0
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