Painéis de partículas à base de bagaço de cana e resina de mamona – produção e propriedades

Fiorelli, Juliano; Lahar, Francisco Antonio Rocco; Nascimento, Maria Fátima do; Savastano, Holmer; Rossignolo, João Adriano

doi:10.4025/actascitechnol.v33i4.9615

Cited by 49 publications

(52 citation statements)

References 4 publications

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“…The particleboards treated at 130°C showed a significantly lower TS than those treated at 90 and 110°C (F=6.47, P < 0.05), indicating that the compression temperature was a predominant variable in curing the adhesive. However, the mean TS values obtained for all the particleboards were lower than those reported by Sartori et al 38 and Fiorelli et al 29 . Tables 2 and 3 list the results of the mechanical tests of static bending strength (MOR and MOE), perpendicular tensile strength (IB) and screw pullout (SP) and their respective coefficients of variation.…”

Section: Physical Characterization Of the Particleboardscontrasting

confidence: 51%

“…In another study, Fiorelli et al 29 investigated the production and properties of particleboards made of sugarcane bagasse and castor oil mono-component and bi-component resin. The characterized materials, which presented an average density of 0.93 g⋅cm -3 , can be classified as high density material recommended for industrial use, showing that castor oil based resin was efficient as a polymer matrix for the production of composite boards made of sugarcane bagasse.…”

Section: Dias and Lahrmentioning

confidence: 99%

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Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

et al. 2014

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Several wood species from the Amazon region are used in the manufacture of furniture, which leaves behind large amounts of waste (slabs, sawdust, sanding dust and bark), thus causing serious environmental impacts. An interesting alternative for the use of these wastes is the manufacture of particleboards. However, few studies have focused on the behavior of Amazonian tree species and the wastes resulting from production with this type of material. This paper discusses the potential use of Tauari (Couratari oblongifolia) wood waste as a raw material for the production of particleboards, using castor oil-based bi-component polyurethane adhesive. Experimental boards were prepared with dry wood particles and a castor-oil polyurethane adhesive content of 16%. The boards, whose nominal density was 1000 kg⋅m , with higher IB and TS than those specified by the NBR 14810-2 and ANSI A208.1 standards, enabling this product to be classified as high-density particleboard suitable for industrial and commercial use.

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Section: Physical Characterization Of the Particleboardscontrasting

confidence: 51%

Section: Dias and Lahrmentioning

confidence: 99%

Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

et al. 2014

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“…However, the literature indicates some strategies that can reduce water absorption and swelling, such as the application of waterproofing agents (adhesives or paraffin) that block the absorption sites (Fiorelli et al, 2011) or the thermal treatment of particles, since Which strengthens the dimensional stability of the composite due to the degradation of the hemicellulose, which releases the compression stress formed during pressing (Carvalho et al, 2015).…”

Section: Physical-mechanical Characterization Of Fabricated Particlebmentioning

confidence: 99%

Technological Characterization and Use of Babassu Residue (Orbygnia phalerata Mart.) in Particleboard

Machado¹,

Andrade²,

Parra-Serrano³

et al. 2017

JAS

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The wood-based panel industry is growing all over the world, and in many countries the raw material is becoming increasingly inadequate and increasingly expensive. Therefore, new inputs are needed to reduce production costs. The residue of babassu palm fruit after nut extraction process is an alternative, due to its fibrous characteristics, the high availability in the large agroindustrial complexes in the North of Brazil and the low cost. Thus the research was: (i) to determine the mechanical characteristics (tensile strength and elasticity), physicochemical characteristics (density, pH, extractives content and chemical composition) and micro-structural of the babassu residue, comparing it with the particles of Pinus sp., used in commercial panels; (ii) to evaluate the quality of panels manufactured with babassu residue by physical conditions (swelling in thickness and water absorption) and mechanical characterization (elasticity and rupture) based on Brazilian Technical Standards (NBR 14810-2: 2013), American (ANSI A208.1: 2009) and European (EN 312: 2003). Statistical analysis of the data was performed with the aid of Infostat software through analysis of variance using Tukey test at the 5% probability level. The babassu residue has technological characteristics that allow its use in particleboard production. However, there are particularities that may compromise its use, such as high silica content and high density. Particleboard made from babassu residue presented mechanical performance above that required by current normative documents. However, for the physical properties, especially for the porosity of the particleboard of babassu, the obtained values were lower than the required minimum.

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“…The use of lignocellulosic fibers and cellulose whiskers, in the raw or modified forms, as a mechanical support for devices based on both natural and synthetic polymers has been the target of current and growing investigations aiming at developing inorganic material-based biocomposites (NETO et al, 2007;PINTO et al, 2005). Cellulose fibers, such as whisker (CW) or nanowhisker (CNW), may be modified by different processes (BRINCHI et al, 2013;FIORELLI et al, 2011). Some studies have demonstrated that the chemical treatments reduce fiber impurity, increase the effective fiber surface area, and significantly improve interfacial matrix/fiber adhesion.…”

Section: Introductionmentioning

confidence: 99%

<b>Glycerol-derived polyurethane nanocomposites containing cellulose nanowhiskers</b> - doi: 10.4025/actascitechnol.v35i4.20276

et al. 2013

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ABSTRACT. This work describes the synthesis of glycerol-derived polyurethane nanocomposite films containing unmodified cellulose nanowhiskers (CNW) or hexamethylene diisocyanate-modified cellulose nanowhiskers ( HDI CNW) as a mechanical support. Cellulose was prepared from sugarcane bagasse using a delignification and whitening approach that is wholly free of chlorine. CNW's were obtained by acid hydrolysis in hydrochloric acid. The formation of nanocomposites was demonstrated by NMR, TEM, FTIR and WAXD. The films with different concentrations of CNW and HDI CNW were characterized by FTIR spectroscopy, and stress-strain measurements. The samples experienced plastic deformation as subjected to an increasing elongation load, and right after yield limit, they fractured without necking. In such a case, the limit tension, which is the maximum stress supported by the sample, matches with the rupture tension. Polyurethane nanocomposites with CNW (CNW-PU) showed values of modulus of elasticity and tensile strength higher than HDI CNW-PU.Keywords: polyurethane, cellulose nanowhisker, sugarcane bagasse.Nanocompósitos de poliuretanas derivadas de glicerol contendo nanocristais de celulose RESUMO. Este trabalho descreve a síntese de filmes de nanocompósitos de poliuretanas derivadas do glicerol contendo nanowhiskers de celulose não modificados (CNW) ou nanowhiskers de celulose modificados com hexametileno diisocianato ( HDI CNW) como reforço. A celulose foi preparada a partir do bagaço da cana-de-açúcar usando deslignificação e branqueamento livre de cloro. CNW's foram obtidos pela hidrólise em ácido clorídrico. A formação dos nanocompósitos foi demonstrada por RMN, MET, IV e DRX. Os filmes de nanocompósitos com diferentes concentrações de CNW e HDI CNW foram caracterizados por espectroscopia na região do infravermelho e medidas de tensão-deformação. As amostras apresentaram deformação plástica quando sujeitas a uma carga crescente de alongamento, e foram fraturadas logo após o limite de elasticidade, sem estiramento. Nesse caso, a tensão limite, que é a tensão máxima suportada pela amostra, coincide com a tensão de ruptura. Os nanocompósitos de poliuretana com CNW (CNW-PU) mostraram o módulo de elasticidade e resistência à tração superiores a HDI CNW-PU.Palavras-chave: poliuretana, nanocristais de celulose, bagaço da cana-de-açúcar.

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Painéis de partículas à base de bagaço de cana e resina de mamona – produção e propriedades

Cited by 49 publications

References 4 publications

Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

Technological Characterization and Use of Babassu Residue (Orbygnia phalerata Mart.) in Particleboard

<b>Glycerol-derived polyurethane nanocomposites containing cellulose nanowhiskers</b> - doi: 10.4025/actascitechnol.v35i4.20276

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