Abstract
Abstract It has been shown that (a) α-methylstyrene polymerizes at room temperatures by gamma-ray irradiation; that (b) the reaction proceeds by a radical mechanism, considering from the effect of solvents, additives and ultraviolet light; that (c) ceiling temperature for this monomer is exceptionally low (ca. 70°C) among vinyl monomers, so that it is hard to obtain high polymers by the usual method; that (d) the experimental fact that the velocity of polymerization is proportional to dose rate and not to square root of dose rate can be explained by the assumption that degradative chain transfer occurs more frequently than the termination between active polymers.
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