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  • 1 University of Girona EPS, Campus Montilivi s/n. Girona Spain 17071 Girona Spain 17071
  • 2 EUETIT – Universitat Politècnica de Catalunya Department of Chemical Engineering Terrassa Spain 08222 Terrassa Spain 08222
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Abstract  

Lyocell, modal and viscose fibers were subjected to mercerization or to solar degradation. The ulterior thermal degradation was analyzed by means of differential scanning calorimetry (DSC). Thermal analysis shows wide exothermic processes that began between 250 and 300C corresponding to the main thermal degradation and are associated to a depolymerization and decomposition of the regenerated cellulose. Thermal degradation was analyzed as a function of concentration and time. Lyocell fiber is the most stable under thermal degradation conditions. Furthermore, mercerized samples are initially more degraded and present a lower thermal stability.