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In‐source and post‐irradiation polymerization of acenaphthylene in the solid state
Author(s) -
Kücükyavuz Savas,
Ülkem Iihan,
Göksel Cemile
Publication year - 1992
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990290108
Subject(s) - acenaphthylene , polymerization , polymer , irradiation , materials science , melting point , photochemistry , polymer chemistry , chemistry , chemical engineering , organic chemistry , composite material , physics , phenanthrene , nuclear physics , engineering
Radiation‐induced solid state polymerization of acenaphthylene was studied by using 60 Co γ‐rays. The extent of polymerization at room temperature reached 68% when acenaphthylene was irradiated with a dose of 2–5 MGy. Prolonged exposure to the radiation decreased the molecular weight of the polymers. The post‐polymerization of acenaphthylene was found to occur at relatively high temperatures close to the melting point of acenaphthylene. Absence of an effective termination step allows the enhancement of post‐polymerization at higher temperatures after a limiting conversion is accomplished.