Influence of steam explosion on the thermal stability of cellulose fibres

Jacquet, Nicolas; Quiévy, Nicolas; Vanderghem, Caroline; Janas, Sébastien; Blecker, Christophe; Devaux, Jacques; Wathelet, Bernard; Paquot, Michel

doi:10.1016/j.polymdegradstab.2011.05.021

Cited by 89 publications

(66 citation statements)

References 19 publications

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“…After stabilization accompanying E-beam irradiation, the peak intensity was markedly lower than that of the pitch fibers, with a slight shift toward higher temperatures. This finding indicated that E-beam irradiation facilitated oxygen permeation into the surface and interior of the pitch fibers during oxidation, as the decrease in weight occurred at higher temperature, indicating that melting was prevented [20,21]. These results suggest that E-beam irradiation promotes the condensation polymerization and infusibility of the pitch fibers, which progressed in thermosetting polymers.…”

Section: Thermal Characteristicsmentioning

confidence: 76%

Stabilization of pitch-based carbon fibers accompanying electron beam irradiation and their mechanical properties

Park¹,

Ko²,

Jung³

et al. 2015

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Carbon fibers are prepared by stabilizing pitch fibers accompanying electron beam (E-beam) irradiation. The carbon fibers pretreated by E-beam irradiation achieve a higher stabilization index than the carbon fibers that are only heat-stabilized. In addition, the carbon fibers subjected to E-beam irradiation in the stabilization step exhibit a comparable tensile strength to that of general purpose carbon fibers. The carbon fibers pretreated with an absorbed dose of 3000 kGy have a tensile strength of 0.54 GPa for a similar fiber diameter. Elemental, Fourier-transform infrared spectroscopy, and thermogravimetric analyses indicate that Ebeam irradiation is an efficient oxidation and dehydrogenation treatment for pitch fibers by showing that the intensity of the aliphatic C-H stretching and aromatic CH 2 bending (out-ofplane) bands significantly decrease and carbonyl and carboxylic groups form.

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Section: Thermal Characteristicsmentioning

confidence: 76%

Stabilization of pitch-based carbon fibers accompanying electron beam irradiation and their mechanical properties

Park¹,

Ko²,

Jung³

et al. 2015

Carbon letters

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“…Wang et al (2009) demonstrated that steam explosion under steam pressures higher than 20 kg/cm 2 for 4 min (severity factor > 3.95) could induce cellulose degradation to a certain degree for Lespedeza stalks. Jacquet et al (2011) also indicated that thermal degradation of cellulose fibers was considerable when the severity factor of steam explosion was above 4.0. Compared with the published paper (Yzombard et al 2014), the tensile strength of the untreated CSBF in this paper was lower, which was mainly due to the different growing environment of cotton stalk.…”

Section: Effect Of Steam Pressure On Mechanical Properties Of Csbfmentioning

confidence: 95%

“…The corresponding severity factor was calculated according to Eq. 1 (Jacquet et al 2011). All steam flash-exploded fibers were rinsed with tap water at a bath ratio of 20:1 at 80 °C for 1 h.…”

Section: Steam Flash-explosion Treatmentmentioning

confidence: 99%

“…Decomposition of hemicelluloses in hemp and jute occurs at approximately 220 to 320 °C (Das et al 2000;Ouajai and Shanks 2005;Yang et al 2007;Moran et al 2008). The maximum thermal decomposition occurs at 268 °C for xylan, which was a representative component of hemicellulose in pyrolysis processes (Yang et al 2007), at 355 °C for commercial cellulose from Sigma-Aldrich Chemie GmbH (Yang et al 2007), and at 370 °C for standard microcrystalline cellulose (Jacquet et al 2011). The decomposition temperature of commercial cellulose occurs at 330 to 400 °C, and cellulose is entirely decomposed at 400 °C (Yang et al 2007).…”

Section: Effect Of Steam Pressure On Mechanical Properties Of Csbfmentioning

confidence: 99%

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Chemical-free Extraction of Cotton Stalk Bark Fibers by Steam Flash Explosion

Hou¹,

Sun²,

Zhang³

et al. 2014

BioResources

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Cotton stalk bark fibers (CSBF) were extracted by steam flash explosion, completed within 0.09 s, and the extracted fibers were compared with those obtained by conventional alkaline treatment. Results indicate that the optimum steam pressure was 2.5 MPa when steaming time was set to 2 min for extracting CSBF. Under the optimized conditions, the obtained CSBF had a cellulose content of 72%, length of 48 mm, fineness of 45 dtex, crystallinity index of 68, moisture regain of 8%, water retention of 98%, and tensile strength of 2.4 cN/dtex, which were similar to results obtained by conventional alkaline treatment. Compared with bark of cotton stalks, CSBF had lower moisture regain and water retention, and higher onset decomposition temperature. The results show that moderate steam flash explosion is a chemical-free, quick, and effective method for exploring the industrial applications of bark of cotton stalks as natural cellulose fibers.

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“…This indicated that the hydrolysis of hemicellulose by acetic and other organic acids (formed from acetyl and other functional groups) proceeded under the aggressive pretreatment conditions (Jacquet et al 2011). The increase indicated that hydrolyzed products were removed by the neutral detergent (Ma et al 2014).…”

Section: Changes In the Chemical Components Of Ebmentioning

confidence: 99%

Changes in the Microstructure and Components of Eulaliopsis binata Treated by Continuous Screw Extrusion Steam Explosion

Feng¹,

Lei²,

Liang³

et al. 2016

BioResources

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Eulaliopsis binata (EB) was pretreated by continuous screw extrusion steam explosion (SESE), with the aim of converting EB into useful materials on an industrial scale. The three main chemical components were characterized by component analysis using the Van Soest fiber detergent system, ultraviolet (UV) absorption spectrophotometry, gel permeation chromatography (GPC), and carbon-13 nuclear magnetic resonance ( 13 C-NMR) spectroscopy. Changes in the contents of detergent soluble species in the Van Soest process revealed the partial degradation of hemicellulose and cellulose, and the partial removal of lignin. GPC indicated that the molecular weight of lignin decreased from 4194 to 3710 g/mol over the first three SESE pretreatment cycles, but then increased to 4592 g/mol following the fourth SESE pretreatment cycle. UV absorption and 13 C-NMR results indicated the partial removal of lignin and the depolymerization and repolymerization of lignin during SESE pretreatment. Scanning electron microscopy (SEM) showed that the epidermis and parenchyma of EB were almost completely desquamated. X-ray diffraction (XRD) revealed that the crystallinity of EB initially increased and then subsequently decreased slightly, with increasing number of SESE pretreatment cycles. The varying physicochemical properties of EB resulting from different numbers of pretreatment cycles may find use in more diverse applications.

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Influence of steam explosion on the thermal stability of cellulose fibres

Cited by 89 publications

References 19 publications

Stabilization of pitch-based carbon fibers accompanying electron beam irradiation and their mechanical properties

Stabilization of pitch-based carbon fibers accompanying electron beam irradiation and their mechanical properties

Chemical-free Extraction of Cotton Stalk Bark Fibers by Steam Flash Explosion

Changes in the Microstructure and Components of Eulaliopsis binata Treated by Continuous Screw Extrusion Steam Explosion

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