Cellulosic degradation of cotton and flax yarns caused by light, heat and heterogeneous acid‐catalyzed hydrolysis was studied. These processes were followed by measuring changes in intrinsic fluidity (1/DPw): two principal stages, characterized by different zero‐order kinetics, take place. A relation between changes in intrinsic fluidity with some mechanical properties of the same yarns during the degradation process was found.
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Testa et al. (1994) studied this question.