Abstract
Isotherms for absorption of iodine by various polymers have been measured at 25°C in aqueous media. Poly(3-vinyl-10-methylphenothiazine) (PVMP), poly(4-vinylpyridine), and poly(tetramethylene ether glycol) absorb 3.0 g, 2.3 g, and 1.8 g of iodine, respectively, per 1.0 g of the polymer when dipped in a 0.05 M aqueous solution of I2 containing KI at 25°C. 6-Nylon, poly(vinyl alcohol), poly(acrylonitrile), poly(acrylamide) absorb 1.7 g, 1.5 g, 1.2 g, and 0.82 g of iodine, respectively, per 1.0 g of the polymer when dipped in a 0.10 M aqueous solution of I2 under the same conditions. Except for 6-nylon, the dependence of the amount of absorbed iodine on [I2] obeys a Langmuir-type equation obtained assuming the equilibrium, complex. The equilibrium constant K ranges from 13 M−1 (for poly(vinyl alcohol)) through 53 M−1 (for PVMP). Cyclic voltammograms obtained using a polymer electrode coated on a Pt wire show the occurrence of smooth oxidation and reduction of I− and I2, respectively, on the surface of the polymer electrode and inside of the polymer electrode.
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References
F. Z. Cramer, Naturwissenschaften, 38, 188 (1951).
R. F. Cournoyer and S. Siggria, J. Polym. Sci., Polym. Chem. Ed., 19, 603 (1966).
M. M. Zwick, J. Polym. Sci. A-1, 4, 1642 (1966).
A. A. Schneider, D. E. Harney, and M. J. Harney, J. Power Sources, 5, 15 (1980).
S. B. Mainthia, P. L. Kronick, and M. M. Labes, J. Chem. Phys., 41, 2206 (1964).
T. Yamamoto, H. Sugimoto, and M. Hishinuma, J. Mater. Sci., 21, 604 (1986).
M. Yamamoto, T. Sano, and T. Yasunaga, Bull. Chem. Soc. Jpn., 55, 1886 (1982).
Y. Oishi and K. Miyasaka, Polym. J., 18, 307 (1986).
J. Gacen and J. Maillo, Bull. Sci. Inst. Text. Fr., 11, 9 (1982).
H. Arimoto, Kobunshi Kagaku, 19, 101 (1962).
H. Arimoto, Kobunshi Kagaku, 19, 205 (1962).
T. Yamamoto, J. Chem. Soc., Chem. Commun., 187 (1981).
T. Yamamoto and S. Kuroda, J. Electroanal. Chem., 158, 1 (1983).
T. Yamamoto, M. Hishinuma, H. Sugimoto, and A. Yamamoto, J. Electroanal. Chem., 194, 197 (1985).
Y. Morishita, Y. Itoh, and A. Koyagi, J. Polym. Sci., Polym. Chem. Ed., 21, 953 (1983).
T. Yokota and Y. Kimura, Makromol. Chem., 186, 549 (1985).
M. K. Pal and P. K. Pal, Makromol. Chem., 188, 1735 (1987).
T. Matsuyama, H. Sakai, H. Yamaoka, Y. Maeda, and H. Shirakawa, Solid State Commun., 40, 563 (1981).
G. Kaindl, G. Wortmann, S. Roth, and K. Menke, Solid State Commun., 41, 75 (1982).
H. Sakai, M. Mizota, Y. Maeda, T. Yamamoto, and A. Yamamoto, Bull. Chem. Soc. Jpn., 58, 926 (1985).
W. M. Latimer, “Oxidation Potentials,” 2nd ed, Prentice-Hall Inc., New York, 1952.
M. Pourbaix, “Atlas of Electrochemical Equilibria in Aqueous Solutions,” Pergamon Press, New York, 1966.
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Sukawa, H., Yoda, Y., Sugimoto, H. et al. Absorption of Iodine by Polymers and Electrochemical Response of Polymer Film in Aqueous Solution of Iodine. Polym J 21, 403–408 (1989). https://doi.org/10.1295/polymj.21.403
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DOI: https://doi.org/10.1295/polymj.21.403