Fiberboards Based on Sugarcane Bagasse Lignin and Fibers

Hoareau, William; Oliveira, Francielli B.; Grelier, Stéphane; Siegmund, Bernard; Frollini, Elisabete; Castellan, Alain

doi:10.1002/mame.200600004

Cited by 74 publications

(58 citation statements)

References 20 publications

(46 reference statements)

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“…The INDULIN AT kraft lignin (63.25 % C, 6.05 % H, 0.94 % N, 1.64 % S, 28.12 % O by difference) was obtained from pine and is free from all hemicellulosic materials. The lignin from sugarcane bagasse (58.90 % C, 4.90 % H, 0.14 % N, 1.53 % S, 34.53 % O by difference) was derived from Brazilian sugarcane (see the work of Frollini et al for additional characterization information regarding this substrate [27,28] ). SEM images of the lignin samples before reaction and the solid residues collected after reaction are given in the Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

Lignin Solubilization and Aqueous Phase Reforming for the Production of Aromatic Chemicals and Hydrogen

2011

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The solubilization and aqueous phase reforming of lignin, including kraft, soda, and alcell lignin along with sugarcane bagasse, at low temperatures (T≤498 K) and pressures (P≤29 bar) is reported for the first time for the production of aromatic chemicals and hydrogen. Analysis of lignin model compounds and the distribution of products obtained during the lignin aqueous phase reforming revealed that lignin was depolymerized through disruption of the abundant β-O-4 linkages and, to a lesser extent, the 5-5' carbon-carbon linkages to form monomeric aromatic compounds. The alkyl chains contained on these monomeric compounds were readily reformed to produce hydrogen and simple aromatic platform chemicals, particularly guaiacol and syringol, with the distribution of each depending on the lignin source. The methoxy groups present on the aromatic rings were subject to hydrolysis to form methanol, which was also readily reformed to produce hydrogen and carbon dioxide. The composition of the isolated yields of monomeric aromatic compounds and overall lignin conversion based on these isolated yields varied from 10-15% depending on the lignin sample, with the balance consisting of gaseous products and residual solid material. Furthermore, we introduce the use of a high-pressure autoclave with optical windows and an autoclave with ATR-IR sentinel for on-line in situ spectroscopic monitoring of biomass conversion processes, which provides direct insight into, for example, the solubilization process and aqueous phase reforming reaction of lignin.

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Section: Methodsmentioning

confidence: 99%

Lignin Solubilization and Aqueous Phase Reforming for the Production of Aromatic Chemicals and Hydrogen

2011

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“…In a series of papers, [9][10][11][12] we have applied a new way of chemically modifying the surface of lignocellulosic fibers. This method involves a selective modification of the lignin polymer partly preserving the cellulose.…”

Section: Introductionmentioning

confidence: 99%

Renewable Resources as Reinforcement of Polymeric Matrices: Composites Based on Phenolic Thermosets and Chemically Modified Sisal Fibers

Megiatto

Oliveira

Rosa

et al. 2007

Macromolecular Bioscience

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Lignocellulosic materials can significantly contribute to the development of composites, since it is possible to chemically and/or physically modify their main components, cellulose, hemicelluloses and lignin. This may result in materials more stable and with more uniform properties. It has previously been shown that chemically modified sisal fibers by ClO(2) oxidation and reaction with FA and PFA presented a thin coating layer of PFA on their surface. FA and PFA were chosen as reagents because these alcohols can be obtained from renewable sources. In the present work, the effects of the polymeric coating layer as coupling agent in phenolic/sisal fibers composites were studied. For a more detailed characterization of the fibers, IGC was used to evaluate the changes that occurred at the sisal fibers surface after the chemical modifications. The dispersive and acid-base properties of untreated and treated sisal fibers surfaces were determined. Biodegradation experiments were also carried out. In a complementary study, another PFA modification was made on sisal fibers, using K2Cr2O(7) as oxidizing agent. In this case the oxidation effects involve mainly the cellulose polymer instead of lignin, as observed when the oxidation was carried out with ClO(2). The SEM images showed that the oxidation of sisal fibers followed by reaction with FA or PFA favored the fiber/phenolic matrix interaction at the interface. However, because the fibers were partially degraded by the chemical treatment, the impact strength of the sisal-reinforced composites decreased. By contrast, the chemical modification of fibers led to an increase of the water diffusion coefficient and to a decrease of the water absorption of the composites reinforced with modified fibers. The latter property is very important for certain applications, such as in the automotive industry.

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“…Sugarcane bagasse is the residue of the extraction of sugarcane juice from sugarcane, and it is used as a combustible material for supplying energy to sugarcane factories, as a pulp raw material in papermaking industries (Khakifirooz et al 2013;Diab et al 2015;Jesus Vargas-Radillo et al 2015), as a fiber in fiberboards (Hoareau et al 2006;Ashori et al 2009), and as reinforcement/filler for composite materials (mineral or degradable matrix-based) (Cao et al 2006;Karim et al 2013;Boontima et al 2015;El-Fattah et al 2015). The annual production of sugarcane amounted to 184 million tons in 2013 (Theng et al 2016), and the bagasse amounts usually measure at 260 kg of moist bagasse per sugarcane ton (Lois-Correa 2012).…”

Section: Introductionmentioning

confidence: 99%

Tensile Strength Assessment of Injection-Molded High Yield Sugarcane Bagasse-Reinforced Polypropylene

et al. 2016

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Sugarcane bagasse was treated to obtain sawdust, in addition to mechanical, thermomechanical, and chemical-thermomechanical pulps. The obtained fibers were used to obtain reinforced polypropylene composites prepared by injection molding. Coupling agent contents ranging from 2 to 10% w/w were added to the composite to obtain the highest tensile strength. All the composites included 30% w/w of reinforcing fibers. The tensile strength of the different sugarcane bagasse fiber composites were tested and discussed. The results were compared with that of other natural fiber-or glass fiber-reinforced polypropylene composites. Pulp-based composites showed higher tensile strength than sawdust-based composites. A micromechanical analysis showed the relationship of some micromechanical properties to the orientation angle, critical length, the intrinsic tensile strength, and the interfacial shear strength. The pulps showed similar intrinsic tensile strengths and were higher than that of sawdust. The properties of the sugarcane bagasse composites compared well with other natural fiber-reinforced composites.

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Fiberboards Based on Sugarcane Bagasse Lignin and Fibers

Cited by 74 publications

References 20 publications

Lignin Solubilization and Aqueous Phase Reforming for the Production of Aromatic Chemicals and Hydrogen

Lignin Solubilization and Aqueous Phase Reforming for the Production of Aromatic Chemicals and Hydrogen

Renewable Resources as Reinforcement of Polymeric Matrices: Composites Based on Phenolic Thermosets and Chemically Modified Sisal Fibers

Tensile Strength Assessment of Injection-Molded High Yield Sugarcane Bagasse-Reinforced Polypropylene

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