Tests were conducted on the specimens that had been submerged at 60 • C and retrieved every 12h. This process exhibits distinct phases. In the first 24 hours, impact strength increases significantly, likely due to the plasticizing effect of water and elevated temperature. From days 1 to day 3, mechanical strength gradually declines, with considerable variability between specimens. This inconsistency may result from differences in the extent of plasticization and molecular weight degradation across samples . After day 3, variability diminishes, and the mechanical properties continue to deteriorate until the material becomes so fragile that it fractures upon handling. To gain a better understanding of the process, the experiment was repeated at a lower temperature of 50 • C. In this case, a sustained increase in the mechanical strength of the specimens was observed, without reaching the point where degradation becomes dominant and they become more fragile. This emphasizes the essential role of temperature in the kinetics of degradation in water.