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Polymerization kinetics of styrene by oligododecandioyl peroxide, and its use in the preparation of graft copolymers

โœ Scribed by Baki Hazer; Aysel Kurt

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
279 KB
Volume
31
Category
Article
ISSN
0014-3057

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โœฆ Synopsis

Bulk polymerization of styrene with oligododecandioyl peroxide (ODDP) was studied and the overall rate constant, k, was found as 8.4. lo-' at 60ยฐC and 5.1 I 10e4 (l/mol)'~*sec-' at 80ยฐC. Active polystyrene containing peroxy groups (0.93 wt%) was obtained by the polymerization of styrene with ODDP at 60ยฐC. At the same concentration of the oligoperoxide and at 80ยฐC the peroxygen content of the active polystyrene was 0.64 wt%. 1: 1 mixture of active polystyrene and polybutadiene gave graft copolymers with some homopolymers at 92ยฐC. Graft copolymers were purified by fractional precipitation and then characterized by i.r. NMR and g.p.c.

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