Abstract
Abstract The absorption spectra of the living polymers of styrene and its derivatives as well as of alkali benzyl have been measured from near infrared region to near ultra violet region, and they were compared. It has been concluded that these living polymers are the polymer anions having the groups of benzyl anion type at the end of a polymer chain. The living polymers of butadiene and isoprene have been separated as the intermediates of polymerization by metallic sodium, and their spectra have been measured. Comparing these spectra with that of allyl sodium, it has been concluded that the living polymer of butadiene and isoprene are the polymer anions having the groups of allyl anion type at the end of a polymer chain. The spectroscopic study on the block polymerization of isoprene with the living polymer of styrene has been carried out. The mechanism of polymerization has been discussed.
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