Abstract
The kinetics of the change in the mechanical properties (strength, elongation, and strain energy at break) of viscose, acetate, and triacetate fibres during thermal aging were investigated. The coefficients of variation and scale dependence of the fracture characteristics and their standardized values were calculated for evaluating the defectiveness of chemical fibres based on cellulose and its acetates. The data obtained demonstrate the lower work capacity of viscose fibres in comparison to acetate and triacetate fibres. The results of the study can be used to predict the operational reliability of textile materials fabricated from chemical fibres based on cellulose and its acetates in prolonged thermal effects.
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