Reference : Influence of steam explosion on the thermal stability of cellulose fibres
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/96348
Influence of steam explosion on the thermal stability of cellulose fibres
English
Jacquet, Nicolas mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Quievy, Nicolas mailto [ > > ]
Vanderghem, Caroline mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Janas, Sébastien mailto [Université de Liège - ULg > Chimie et bio-industries > Technologie des industries agro-alimentaires >]
Blecker, Christophe mailto [Université de Liège - ULg > Chimie et bio-industries > Technologie des industries agro-alimentaires >]
Devaux, Jacques mailto [ > > ]
Wathelet, Bernard mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Paquot, Michel mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Sep-2011
Polymer Degradation & Stability
Elsevier Science
96
1582-1588
Yes (verified by ORBi)
International
0141-3910
Oxford
United Kingdom
[en] steam explosion ; microcristal cellulose ; degradation
[en] The aim of the present study was to compare the effect of different steam explosion treatments on the thermal degradation of a bleached cellulose. The intensity of a steam explosion treatment, which allows breakdown of the structural lignocellulosic material was determined by a correlation between time and temperature of the process.
Results of this study showed that thermal degradation of cellulose fibres was limited when the severity factor applied was below 4.0. For higher intensities, determination of the degradation products in the water-soluble extract showed an important increase of the 5-hydroxymethyl-furfural concentration with the temperature. When the severity factor reached 5.2., TGA analysis showed that the increase of degradation products was coupled to an increase of the char level meaning a strong degradation of the cellulose. dTGA behaviour also showed that thermal stability of the steam explosion samples decreased with the intensity of the treatment. To conclude, a theoretical diagram predicting the degradation of the cellulose during the steam explosion treatment was established.
http://hdl.handle.net/2268/96348

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