Thermal
degradation of lyocell,modal and viscose fibers under aggressive conditions |
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Authors: | J J Suñol J Saurina F Carrasco X Colom F Carrillo |
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Institution: | (1) EPS, Campus Montilivi s/n., University of Girona, Girona, Spain, 17071;(2) Department of Chemical Engineering, EUETIT – Universitat Politècnica de Catalunya, 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 300°C 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. |
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Keywords: | cellulose fibers degradation DSC lyocell modal viscose |
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