Abstract

AbstractRadiation‐induced polymerizations of styrene oxide and propylene oxide were carried out by using electrons from a Van de Graaff generator in the liquid and solid states of the monomers. It was found from the experiments that styrene oxide is polymerizable in both liquid and solid states; on the other hand, propylene oxide can be polymerized in the solid state only in the presence of styrene oxide. It was suggested that the chain transfer and isomerization reactions are rapid and play an important role in the polymerization of styrene oxide. Because polymerization of propylene oxide in bulk in the liquid and solid states is not possible, it may be suggested that the polymerization proceeds in an amorphous monomer phase or in a crystalline phase which is modified by the addition of styrene oxide.

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