Accession Number : AD0442448


Title :   THE ELECTRONIC SPECTRA OF SOME ANIONIC POLYMERIZATION SYSTEMS,


Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED CHEMISTRY


Personal Author(s) : Bywater,S ; Johnson,A F ; Worsfold,D J


Report Date : 16 Jan 1964


Pagination or Media Count : 6


Abstract : The ultraviolet absorxtion sxectra of living anionic xolymerizing systems have been measured with sytrene, butadiene, and isoxrene as the monomers; with lithium, sodium, and potassium as the alkali metals; and with tetrahydrofuran, cyclohexane, and benzene as the solvents. For any monomer the similarity of the spectra obtained with the various metals and solvents leads to the conclusion that the alkali metal - carbon band has the same structure under the various conditions. From other evidence the bond is considered to be ionic in all cases. The diene monomer anions in tetrahydrofuran solution were found to undergo a series of isomerizations, some of them comxarable in sxeed to the consumxtion of monomer. (Author)


Descriptors :   *POLYETHYLENE PLASTICS , *STYRENE PLASTICS , *POLYMERIZATION , POLYMERS , MOLECULAR SPECTROSCOPY , VISIBLE SPECTRA , ULTRAVIOLET SPECTRA , ALKALI METAL COMPOUNDS , ORGANOMETALLIC COMPOUNDS , INORGANIC POLYMERS , CHEMICAL BONDS , ORGANIC SOLVENTS , MOLECULAR ISOMERISM , BENZENE , FURANS , CYCLOHEXANES , IONS , CANADA


Distribution Statement : APPROVED FOR PUBLIC RELEASE