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The thermal degradation of cellulose triacetate—III. The degradation mechanism

✍ Scribed by A. Scotney

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
493 KB
Volume
8
Category
Article
ISSN
0014-3057

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✦ Synopsis

A mechanism for the thermal degradation of cellulose triacetate in vacuo is proposed, having as its principal features deacetylation in the polymer chain and chain-scission at the 1,4glycosidic linkages between pyranose rings. The former process results in formation of acetic acid, the latter in the formation of the tarry material. A model structure for the tarry material is proposed to satisfy the analytical data and chemical properties of the tar. The proposed chain-scission process enables a detailed picture of the process of residue formation to be assembled, and the overall mechanism accounts satisfactorily for the quantities of the various degradation products.

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