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Fourier transform ir studies of the degradation of polyacrylonitrile copolymers—II: Acrylonitrile/methacrylic acid copolymers

✍ Scribed by G.T. Sivy; M.M. Coleman

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
534 KB
Volume
19
Category
Article
ISSN
0008-6223

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✦ Synopsis

The results of a Fourier transform IR study of the degradation of an acrylonitrile copolymer containing approx. 4 wt% of methacrylic acid, at 130°C under a reduced pressure of 5 x lo-* Torr, are presented. A mechanism is proposed for the degradation that is consistent with the IR spectral evidence. Additionally, we have determined from our experimental results that methacrylic acid is incorporated into the cyclized degraded structure and that, on average, three to four acrylonitrile acids are cyclized for each acid initiation.

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