Influence of homogenization and drying on the thermal stability of microfibrillated cellulose

Quiévy, Nicolas; Jacquet, Nicolas; Sclavons, Michel; Deroanne, Claude; Paquot, Michel; Devaux, Jacques

doi:10.1016/j.polymdegradstab.2009.11.020

Cited by 138 publications

(60 citation statements)

References 25 publications

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“…The behavior of cellulose thermal degradation has been extensively investigated [25][26][27][28] and has been explained for many mechanisms that are not completely known because the complex nature of the reaction. In this sense some pseudo-mechanistic models have been used to explain this process.…”

Section: Resultsmentioning

confidence: 99%

“…Cellulose thermal degradation can be described by a mechanism that involves two competitive reactions. The first step that produces carbonaceous residues by cellulose dehydration reactions and a second step that primarily involves reduction in the polymerization degree (depolymerization) and finally the decomposition [24,26,28] . Initial bacterial cellulose, Figure 3a, the analysis demonstrated a degradation range of 327 to 370 °C however 30 and 60 days samples showed a degradation temperature between 340 and 370 °C, Figure 3b.…”

Section: Resultsmentioning

confidence: 99%

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Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

et al. 2015

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

et al. 2015

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“…In addition, the equilibrium moisture content values decreased as the temperature increased, at each water activity level. These items are mainly composed of cellulose, hemicellulose, and pectin, and at low temperatures, when the system saturation pressure is lower, they may be able to absorb water (BARBOSA-CÁNOVAS et al, 2007;QUIÉVY et al, 2010).…”

Section: Thermodynamic Properties Of Water Sorptionmentioning

confidence: 99%

Thermodynamic properties of water sorption of jackfruit (Artocarpus heterophyllus Lam.) as a function of moisture content

et al. 2013

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The Jackfruit tree is one of the most significant trees in tropical home gardens and perhaps the most widespread and useful tree in the important genus Artocarpus. The fruit is susceptible to mechanical and biological damage in the mature state, and some people find the aroma of the fruit objectionable, particularly in confined spaces. The dehydration process could be an alternative for the exploitation of this product, and the relationship between moisture content and water activity provides useful information for its processing and storage. The aim of this study was to determine the thermodynamic properties of the water sorption of jackfruit (Artocarpus heterophyllus Lam.) as a function of moisture content. Desorption isotherms of the different parts of the jackfruit (pulp, peduncle, mesocarp, peel, and seed) were determined at four different temperatures (313.15, 323.15, 333.15, and 343.15 K) in a water activity range of 0.02-0.753 using the static gravimetric method. Theoretical and empirical models were used to model the desorption isotherms. An analytical solution of the Clausius-Clapeyron equation was proposed to calculate the isosteric heat of sorption, the differential entropy, and Gibbs' free energy using the Guggenhein-Anderson-de Boer and Oswin models considering the effect of temperature on the hygroscopic equilibrium.

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“…The considerable interest in these fibers is due to their biodegradability, renewability, low density and mechanical properties comparable to those inorganic fibers 5 . Cellulose is a natural polymer consisting of D-anhydroglucose (C 6 H 11 O 5 ) repeating units joined by 1.4-β-D-glycosidic linkages at C1 and C4 position 6 .…”

Section: Introductionmentioning

confidence: 99%

“…Thus, cellulose crystallinity and hydrogen bond between cellulose chains play an important role in the mechanical and thermal properties of composite materials reinforced with cellulose fibers 1,13 . Several techniques as X-ray diffraction and FTIR spectroscopy were used to evaluate the wood and cellulose crystallinity 5,7,8,9,10,12 . However, FTIR spectroscopy has been used as a simple technique for obtaining rapid information about the structure of cellulose and chemical changes taking place in cellulose due to various treatments 10,21,22,[25][26][27] .…”

Section: Introductionmentioning

confidence: 99%

Materials produced from plant biomass: part II: evaluation of crystallinity and degradation kinetics of cellulose

et al. 2012

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In this study Eucalyptus grandis (CEG) and Pinus taeda (CPT) cellulose fibers obtained from kraft and sulfite pulping process, respectively, were characterized using Fourier transform infrared (FTIR) spectroscopy and thermogravimetry (TGA). The degradation kinetic parameters were determined by TGA using Coats and Redfern method. FTIR results showed that CPT presented a more ordered structure with higher crystallinity than CEG. Thermogravimetric results showed that CPT had a higher thermal stability than CEG. The kinetic results revel that for CEG the degradation mechanism occurs mainly by random nucleation, although phase boundary controlled reactions also occurs while for CPT the degradation process is more related with phase boundary controlled reactions. Results demonstrated that differences between thermal stability and degradation mechanisms might be associated with differences in the cellulose crystalline structure probably caused by different pulping processes used for obtaining the cellulose fibers.

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Influence of homogenization and drying on the thermal stability of microfibrillated cellulose

Cited by 138 publications

References 25 publications

Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

Biodegradation evaluation of bacterial cellulose, vegetable cellulose and poly (3-hydroxybutyrate) in soil

Thermodynamic properties of water sorption of jackfruit (Artocarpus heterophyllus Lam.) as a function of moisture content

Materials produced from plant biomass: part II: evaluation of crystallinity and degradation kinetics of cellulose

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