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Kinetic study of radical polymerization of dialkyl fumarates using electron spin resonance spectroscopy

✍ Scribed by Akikazu Matsumoto; Yoshinori Sano; Masahiro Yoshioka; Takayuki Otsu

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
628 KB
Volume
34
Category
Article
ISSN
0887-624X

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✦ Synopsis

The radical polymerization of dialkyl fumarates (DRF) bearing various ester alkyl groups was kinetically studied. The propagation and termination rate constants were determined using electron spin resonance (ESR) spectroscopy. The introduction of the bulky ester alkyl groups such as a tert-butyl group decreased the termination rate constant as expected.

However, it has also been revealed that the bulky groups promote propagation despite the steric repulsion. The propagation rate and mechanism are discussed in relation to the propagation manner, i.e., tacticity of the polymer.

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