Abstract
The coefficient ks in the expression for the sedimentation coefficient, 1/S=(1/S0)(1+ksc+···), where S and S0 are the sedimentation coefficients at finite polymer concentration c and at infinite dilution, respectively, was investigated experimentally for the systems of poly(α-methylstyrene) and polystyrene in cyclohexane in the vicinity of the θ-condition.The ks-values at the θ-condition were positive and were expressed by a linear function of the square root of molecular weight. The behavior of ks in the region away from the θ-condition could be satisfactorily described according to the theory of Pyun and Fixman when certain results obtained regarding the relationship between the segment–segment interaction parameter and the expansion factor were used.
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References
J. M. Burgers, Proc. Nat. Acad. Sci., Amsterdam, 45, 9 (1942).
K. E. Van Holde and M. Wales, J. Polym. Sci., 14, 81 (1954).
H. Yamakawa, J. Chem. Phys., 36, 2995 (1962).
C. W. Pyun and M. Fixman, J. Chem. Phys., 41, 937 (1964).
I. H. Billick, Preprints, 142nd Annual Meeting of the American Chemical Society, Chicago, 1964.
I. H. Billick, Polym. Prepr., Am. Chem. Soc., Div. Polym. Chem., 5(2), 855 (1964).
A. Kotera, T. Saito, N. Yamaguchi, A. Wada, Y. Taniyama, S. Usami and T. Sakai, Preprints, SPSJ 12th Annual Meeting, Tokyo, May 1963, p 97.
I. Noda, S. Saito, T. Fujimoto, and M. Nagasawa, J. Phys. Chem., 71, 4048 (1967).
M. Abe, K. Sakato, T. Kageyama, M. Fukatsu, and M. Kurata, Bull. Chem. Soc. Jpn., 41, 2330 (1968).
J. M. G. Cowie, S. Bywater, and D. J. Worsfold, Polymer (London), 8, 105 (1967).
D. McIntyre, A. Wims, L. C. Williams, and L. Mandelkern, J. Phys. Chem., 66, 1932 (1962).
H. Fujita, “Mathematical Theory of Sedimentation Analysis”, Academic Press, New York, N. Y., 1962.
N. Donkai and T. Kotaka, J. Polym. Sci., Part A-2, 6, 1457 (1968).
T. Homma, K. Kawahara, H. Fujita, and M. Ueda, Makromol. Chem., 67, 132 (1963).
M. Wales and S. J. Rehfeld, J. Polym. Sci., 62, 179 (1962).
I. H. Billick, J. Phys. Chem., 66, 1941 (1962).
T. Svedberp and K. O. Pederson, “The Ultracentrifuge”, Oxford University Press, London 1940.
M. Fixman, J. Chem. Phys., 36, 3123 (1962).
T. Sakai, J. Polym. Sci., Part A-2, 6, 1535 (1968); private communication.
J. M. Pederson and M. Fixman, J. Chem. Phys., 39, 2516 (1963).
S. Newman and F. Eirich, J. Colloid Sci., 5, 541 (1950).
A. F. Shick and S. J. Singer, J. Phys. Chem., 54, 1028 (1950).
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Kotera, A., Saito, T. & Hamada, T. Concentration Dependence of the Sedimentation Coefficient of Flexible Macromolecules in Dilute Solution: Poly(α-methylstyrene) and Polystyrene. Polym J 3, 421–430 (1972). https://doi.org/10.1295/polymj.3.421
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DOI: https://doi.org/10.1295/polymj.3.421