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Galvinoxyl as scavenger in the radical polymerization of styrene initiated by AIBN
Author(s) -
Areizaga J. F.,
Guzmán G. M.
Publication year - 1988
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19880200112
Subject(s) - radical , styrene , polymerization , scavenger , chemistry , radical polymerization , reaction rate constant , polymer chemistry , photochemistry , copolymer , kinetics , organic chemistry , polymer , physics , quantum mechanics
The initiation of the polymerization of styrene by AIBN has been studied at 59, 8°C and 69, 9°C, using Galvinoxyl as a free radical scavenger, by spectrophotometric means. Rates of 7×10 −9 and 2×10 −8 mol·1 −1 · s −1 have been measured for the scavengeable free radicals formation in the initiation process of the thermal polymerization of pure styrene, respectively. Values of 6×10 −6 s −1 and 2, 4×10 −5 s −1 have been obtained for the rate constants of production of scavengeable pairs of free radicals (kdf) from AIBN assuming an ideal kinetic scheme.