Abstract
The photochemical degradation of purified cotton cellulose by ultraviolet light has been studied and the following nonvolatile breakdown products identified: cellobiose, 3-β-d-glucosido-d-arabinose, glucose, and arabinose. Their formation can be explained by fission of bonds around carbon atoms no. 1 of glucose units, while the initiating step is probably cleavage of the glucosidic linkages. Some evidence for the presence of smaller fragments indicates that fission of carbon-to-carbon bonds may also occur, although this appears to be a relatively small contribution to the over-all process of degradation.
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