Abstract
Adsorption of polystyrene having a molecular weight ranging from 600 to 2,000,000 onto Aerosil 130 from cyclohexane solutions at the theta temperature was studied by UV and IR spectroscopy. Adsorbance, (A) was determined using UV spectroscopy while both the fraction of the surface sites occupied, (Σ) and the fraction of the segments adsorbed per polymer chain, (p) were measured by IR spectroscopy. Adsorbance increases with increasing molecular weight up to Mw=50×104 and then levels off. The value of Σ increases while the p value decreases with increasing molecular weight. The close correlation between the adsorbed amount Γ per site determined UV spectroscopy and the ratio Σ/p measured by IR spectroscopy can be observed except for cases involving high molecular weight samples. The data were compared with the theories of Scheutjens and Fleer and Silberberg based on a lattice model. There was excellent agreement between the data and these theories.
Similar content being viewed by others
Article PDF
References
A. Silberberg, J. Chem. Phys., 48, 2835 (1968).
K. Motomura and R. Matsuura, J. Chem. Phys., 50, 1281 (1969).
M. Lax, Macromolecules, 7, 660 (1974).
D. Chan, D. T. Mitchell, B. W. Ninham, and L. R. White, J. Chem. Soc. Faraday Trans., 2, 71 (1975).
R. J. Roe, J. Chem. Phys., 60, 4192 (1974).
R. J. Roe, J. Chem. Phys., 62, 490 (1975).
M. Lal and R. J. T. Stepto, J. Polym. Sci., Polym. Symp., No. 61, 401 (1977).
C. A. J. Hoeve, J. Polym. Sci., Polym. Symp., No. 61, 389 (1977).
J. M. H. M. Scheutjens, and G. J. Fleer, J. Phys. Chem., 83, 1619 (1979).
R. R. Stromberg, D. J. Tutas, and E. Passaglia, J. Phys. Chem., 69, 3955 (1965).
H. Gebhard and E. Killmann, Angew. Makromol. Chem., 53, 171 (1976).
A. Takahashi, M. Kawaguchi, and T. Kato, “Adhesion and Adsorption of Polymers,” Part B, Polymer Science and Technology Series 12B, Plenum, New York, N.Y., 1980, p 729.
M. Kawaguchi and A. Takahashi, J. Polym. Sci., Polym. Phys. Ed., in press.
A. Takahashi, M. Kawaguchi, H. Hirota, and T. Kato, Macromolecules, in press.
B. J. Fontana and J. R. Thomas, J. Phys. Chem., 65, 480 (1961).
G. R. Joppien, Makromol. Chem., 175, 1931 (1974).
C. V. Linden and R. V. Leemput, J. Colloid Interface Sci., 67, 48 (1978).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kawaguchi, M., Hayakawa, K. & Takahashi, A. Adsorption of Polystyrene onto Silica at the Theta Temperature. Polym J 12, 265–270 (1980). https://doi.org/10.1295/polymj.12.265
Issue Date:
DOI: https://doi.org/10.1295/polymj.12.265