Abstract
The zero-shear viscosity η0 of styrene-2-vinylpyridine diblock copolymers in semidilute solutions was measured in pyridine (a commonly good solvent), methyl ethyl ketone (MEK) (a commonly poor solvent) at 25°C, and in benzene (a selective solvent) at 11.4°C. It was found that the reduced zero-shear viscosity ηR0 (≡ηsp0/C[η]) is expressed as a universal function of C[η] in all solvents, and the dependence of ηR0 on C[η] is determined by the exponent in the relationship between the radius of gyration and molecular weight of the block component which has the larger excluded volume, regardless of the solvent.
Similar content being viewed by others
Article PDF
References
P. G. de Gennes, “Scaling Concepts in Polymer Physics,” Cornell University Press, Ithaca, New York, 1979.
I. Noda, in “Molecular Conformation and Dynamics of Macromolecules in Condensed Systems,” M. Nagasawa, Ed., Elsevier, Tokyo, 1988.
P. J. Flory, “Principles of Polymer Chemistry,” Cornell University Press, Ithaca, New York, N. Y., 1953.
P. G. de Gennes, Macromolecules, 9, 587 594 (1976).
Y. Takahashi, Y. Isono, I. Noda, and M. Nagasawa, Macromolecules, 18, 1002 (1985).
Y. Takahashi, I. Noda, and M. Nagasawa, Macromolecules, 18, 2220 (1985)
T. Hashimoto, M. Shibayama, and H. Kawai, Macromolecules, 16, 1093 (1983).
H. Watanabe, and T. Kotaka, Polym. J., 14, 739 (1982).
Y. Ohta, T. Kojima, T. Takigawa, and T. Masuda, J. Rheol., 31, 711 (1987).
T. Tanaka, M. Omoto, and H. Inagaki, Macromolecules, 12, 146 (1979).
T. Tanaka, M. Omoto, and H. Inagaki, J. Macromol. Sci., Phys., B17, 229 (1980).
L. Ionescu, C. Picot, R. Duplessix, M. Duval, H. Benoit, J. P. Lingelser, and Y. Gallot, J. Polym. Sci., Polym. Phys. Ed., 19, 1033 (1981).
Y. Matsushita, Y. Nakao, K. Shimizu, I. Noda, and M. Nagasawa, Macromolecules, 21, 2790 (1988).
Y. Matsushita, Y. Nakao, R. Saguchi, H. Choshi, and M. Nagasawa, Polym. J., 18, 493 (1986).
S. H. Maron, I. M. Krieger, A. W. Sisko, J. Appl. Phys., 25, 971 (1954).
M. Kawai, Y. Matsushita, and I. Noda, in preparation.
Y. Takahashi, Y. Matsushita, I. Noda, A. I. Nakatani, H. Kim, and C. C. Han, in preparation.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Yamaguchi, M., Maeda, N., Takahashi, Y. et al. Zero-Shear Viscosity of Block Copolymers in Semidilute Solutions. Polym J 23, 227–232 (1991). https://doi.org/10.1295/polymj.23.227
Issue Date:
DOI: https://doi.org/10.1295/polymj.23.227