Abstract
The formation in nylon films of an absorption center at 2900 A. by the action of ultraviolet light is reported. The processes involved are found to be free radical in nature and the suggestion is made that this center is either an alkyl or acyl peroxy radical. The kinetics of absorption center formation have been studied using a spectrophotometric technique. It is found that the peculiarities of the system are the result of the difference in order between gaseous and radical diffusion rates in a high polymer. The usefulness of polychromatic light in this type of work is pointed out. Finally, the possibility of using nylon films as a matrix for the study of free radicals at room temperature is mentioned.
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