Expressions for number size distributions and average chain lengths for initially homogeneous (one chain length only) polymer films photodegraded by random chain scission have been derived. Beer‐Lambert's law has been assumed to hold for the films. Numerical evaluations are given; errors due to treating the degradation process by the ordinary random theory of chain scission can become appreciable.
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H. H. G. Jellinek (1962) studied this question.
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