Abstract
A polymerization procedure for polystyrenes having high molecular weight and sharp molecular weight distributions is reported. A drop of n-hexylbenzene solution of n-butylithium is added to a THF solution of styrene with strong stirring. The initiator can be uniformly distributed throughout the solution to react with impurities in the solution while the drop is dissolving into the THF. The molecular weight distribution of the polystyrenes thus prepared is much sharper than those of monodisperse polystyrenes available commercially and their molecular weights can be over 10 million.
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T. Fujimoto, N. Ozaki, and M. Nagasawa, J. Polym. Sci., Part A, 3, 2259 (1965).
F. Wenger and S. P. S. Yen, Makromol. Chem., 43, 1 (1961).
D. Mclntyre, L. J. Fetters, and E. Slagowski, Science, 176, 1041 (1972).
M. Szwarc, M. Levy, and R. McKovitch, J. Am. Chem. Soc., 78, 2656 (1956).
M. Fukuda, M. Fukutomi, T. Kato, and T. Hashimoto, J. Polym. Sci., 12, 871 (1974).
T. Fukutomi, private communication.
K. Kawahara, Makromol. Chem., 73, 1 (1964).
H. Fujita, “Mathematical Theory of Seddimentation Analysis”, Academic Press Inc., New York, N.Y., 1962.
W. B. Brown and M. Szwarc, Trans. Faraday Soc., 54, 416 (1958).
T. Shimomura, K. J. Tölle, J. Smid, and M. Szwarc, J. Am. Chem. Soc., 89, 796 (1967).
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Fujimoto, T., Nagasawa, M. Preparation of Monodisperse Polystyrenes with High Molecular Weights. Polym J 7, 397–401 (1975). https://doi.org/10.1295/polymj.7.397
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DOI: https://doi.org/10.1295/polymj.7.397