Аннотация:The study of the effect of iodine on the degradation of poly(ε-caprolactone) (PCL) fibers has revealed a drastic decrease in their molecular weight during 24-h exposure in a 10% iodine solution in ethanol. It has been assumed that the main mechanism of PCL degradation under these conditions is alcoholysis, which proceeds with an efficient rate constant of nearly 7.5·10^-3 h^-1.