Radiation-induced copolymerization of hexafluoroacetone with. cap alpha. -olefins. [. gamma. rays]

Journal Article · Tue Feb 01 00:00:00 EST 1977 · J. Polym. Sci., Polym. Lett. Ed.; (United States)

DOI:https://doi.org/10.1002/pol.1977.130150208· OSTI ID:5251894

Matsuda, O; Watanabe, S; Okamoto, J; Machi, S; Tabata, Y

The copolymerization of hexafluoroacetone with higher ..cap alpha..-olefins above butene, such as 1-pentene (I), 1-hexene (II), 1-octene (III), 2-methyl-1-butene (IV), 2-methyl-1-pentene (V), 3-methyl-1-butene (VI), and 4-methyl-1-pentene (VII) was studied at relatively low temperatures by ..gamma..-ray irradiation. Copolymerization of II, IV, V, and VII with hexafluoroacetone was found to scarcely take place at -78/sup 0/C in bulk, but the addition of trichlorotrifluoroethane in amounts to yield equimolar mixtures resulted in conversion of 15.7 percent for IV and of 2.1 to 4.0 percent for the other ..cap alpha..-olefins. Higher conversion of V at -78/sup 0/C than at 0/sup 0/C suggest that copolymerization may take place via an ionic mechanism. The effects of various additives on the copolymerization are reported. Infrared spectral studies indicated that the double bond of the ..cap alpha..-olefins is opened to form a polymer. The C--O double bond of the hexafluoroacetone and the ..cap alpha..-olefin double bond are opened to form the copolymer.

• Research Organization: Japan Atomic Energy Research Inst., Takasaki
• OSTI ID: 5251894
• Journal Information: J. Polym. Sci., Polym. Lett. Ed.; (United States), Vol. 15:2
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ALKENES
CHEMICAL RADIATION EFFECTS
KETONES
ORGANIC FLUORINE COMPOUNDS
COPOLYMERIZATION
GAMMA RADIATION
CHEMICAL REACTIONS
CHEMISTRY
ELECTROMAGNETIC RADIATION
HYDROCARBONS
IONIZING RADIATIONS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLYMERIZATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
400600* - Radiation Chemistry