## Abstract The theory that β‐ketonitrile structures initiate discoloration reactions in polyacrylonitrile has been tested by a number of methods. Using radiochemical techniques the numbers of carbonyl groups in various polymers have been measured as have the amounts of combined water. A model β‐ke
The degradation and stabilization of polyacrylonitrile—II. Degradation of 1,3,5,7-tetracyanoheptane
✍ Scribed by G. Ayrey; S.K. Chadda; R.C. Poller
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 224 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
A pure model compound for potyacrylonitrile, 1,3,5,7-tetracyanoheptane, was shown to discolour thermally in a similar manner to the polymer. This and other evidence is presented to support the view that thermal degradation of polyacrylonitrile is a free radical reaction involving tertiary hydrogen atoms.
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