The potential use of Ricinus communis L. (Castor) stalks as a lignocellulosic resource for particleboards

Grigoriou, A.; Ntalos, G.

doi:10.1016/s0926-6690(00)00078-9

Cited by 47 publications

(28 citation statements)

References 2 publications

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“…This may be due to the fact that a large part of the anatomical constitution of this material is medullary cells, different from wood particles (Figure 2). The detrimental influence of medulla on composite properties has been reported in similar studies (Grigoriou & Ntalos, 2001).…”

Section: /6supporting

confidence: 67%

Grape rachis in composites manufacturing

Baldin

Silveira

Talgatti

et al. 2018

Agraria

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ABSTRACT:The study aims to verify the possibility of using grape rachises in the production of composites. Three different proportions of pine wood (Pinus eliottii) and grape rachis, glued with urea-formaldehyde adhesive, were used. Assessment of composite quality consisted of the determination of physical properties: moisture content; specific mass; water absorption and thickness swelling after 2 and 24 h of immersion; and mechanical properties: static bending; screw withdrawal and Janka hardness. Histological slides were made for anatomical visualization of particles and analysis in scanning electron microscopy (SEM) to verify adhesion in the composites. Thephysical and mechanical properties were negatively affected by the addition of grape rachis particles. This may be due to a large part of the anatomical constitution of this material to be medullary cells, different from wood particles. General assessments of the results indicate the technical feasibility of using grape rachis for the production of composites.Key words: physical-mechanical properties; residues; urea-formaldehyde Engaço da uva na fabricação de compósitos RESUMO: O presente estudo tem como objetivo verificar a possibilidade de utilização do engaço da uva na fabricação de compósitos. Foram utilizadas três diferentes proporções de madeira de pinus (Pinus eliottii) e engaço da uva, colados com adesivo ureia-formaldeído. A avaliação da qualidade dos compósitos compreendeu na determinação das propriedades físicas: teor de umidade; densidade; absorção de água e inchamento em espessura, após 2 e 24 h de imersão e das propriedades mecânicas: flexão estática; arrancamento de parafusos e dureza Janka. Foram confeccionadas lâminas histológicas para visualização anatômica das partículas e análises em microscopia eletrônica de varredura (MEV) para verificação da colagem nos compósitos. As propriedades físicas e mecânicas foram afetadas negativamente pela adição de partículas de engaço da uva. Os resultados podem ser atribuídos ao engaço possuirem sua constituição anatômica grande parte de células medulares, quando comparado às partículas de madeira. Do modo que a pesquisa foi conduzida é inviável o uso de engaço da uva para produção de compósitos. Palavras-chave: propriedades físico-mecânicas; resíduos; ureia-formaldeídoGrape rachis in composites manufacturing Rev. Bras.

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Section: /6supporting

confidence: 67%

Grape rachis in composites manufacturing

Baldin

Silveira

Talgatti

et al. 2018

Agraria

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“…Studies have been conducted to find the suitable agrofibers for composite manufacturing (Bektaş et al 2005). Some of the agrofibers studied so far are cotton and hemp stalks (Kollmann 1966), groundnut shell (Jain et al 1967), bagasse (Mitlin 1968;Turreda 1983), grain-wheat straw (Mosesson 1980;Han et al 1998), bamboo (Rowell and Norimoto 1998), tea plant waste (Nemli and Kalaycioğlu 1997;Yalinkiliç et al 1998;Filiz et al 2011;Batiancela et al 2014), sunflower stalks (Khristova et al 1998;Bektaş et al 2005), vine branches (Ntalos and Grigoriou 2002), castor stalks (Grigoriou and Ntalos 2001), corn stalks (Güler et al 2001), wheat straw and corn stalks (Wang and Sun 2002), kiwi branches (Nemli et al 2003), peanut shell (Batalla et al 2005), almond shells (Gürü et al 2006), agricultural waste (Arslan et al 2007), giant reed (Garcia-Ortuna et al 2011), kenaf (Xu et al 2013), kenaf and rubberwood (Abdul Halip et al 2014), sunflower seed husks (Cosreanue et al 2015), and hazelnut husk (Avcı et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Properties of Particleboard Produced from Red Pine (Pinus brutia) Chips and Lavender Stems

Taş¹,

Sevinçli²

2015

BioResources

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The usability of lavender stems along with red pine chips was investigated as raw materials in the production of particleboard. Medium-density particleboard was manufactured using urea formaldehyde glue at three different ratios for five different mixture groups containing lavender stems and red pine chips. Some physical and mechanical properties of the boards were investigated. According to the statistical studies of the results, decreasing the ratio of lavender stems between board groups reduced the thickness swelling value. The internal bond strength, bending strength, and elastic modulus values of all board groups (%10-12 glued) were above the minimum values set by the TS-EN-312 standard for general purpose particleboard. According to these results, either lavender stems alone or together with red pine chips are suitable for use as a new raw material for particleboard manufacturing.

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“…During last two decades, people have been concerned about deforestation and forest degradation and its impact on biodiversity, global warming, and productivity for wood. 1,2 Additionally, in many developing countries, such as Iran, forest wood is not sufficient to meet their demands for wood-based industries. However, many of these countries do have relatively large quantities of other lignocellulosic materials in the form of agro-residues from annual crops.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of agro‐residue‐reinforced polypropylene composites

Ashori

Nourbakhsh

2008

J of Applied Polymer Sci

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In this research, fully environment-friendly, sustainable and biodegradable composites were fabricated, using wheat straw and rice husk as reinforcements for thermoplastics, as an alternative to wood fibers. Mechanical properties including tensile, flexural, and impact strength properties were examined as a function of the amount of fiber and coupling agent used. In the sample preparation, three levels of fiber loading (30, 40, and 50 wt %) and two levels of coupling agent content (0 and 2 wt %) were used. As the percentage of fiber loading increased, flexural and tensile properties increased significantly. Notched Izod results showed a decrease in strength as the percentage of fiber increases. With addition of 50% fiber, the impact strengths decreased to 16.3, 14.4, and 16.4 J/m respectively, for wheat straw-, rice husk-, and poplar-filled composites. In general, presence of coupling agent had a great effect on the mechanical strength properties. Wheat straw-and rice husk-filled composites showed an increase in the tensile and flexural properties with the incorporation of the coupling agent. From these results, we can conclude that wheat straw and rice husk fibers can be potentially suitable raw materials for manufacturing biocomposite products.

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The potential use of Ricinus communis L. (Castor) stalks as a lignocellulosic resource for particleboards

Cited by 47 publications

References 2 publications

Grape rachis in composites manufacturing

Grape rachis in composites manufacturing

Properties of Particleboard Produced from Red Pine (Pinus brutia) Chips and Lavender Stems

Mechanical behavior of agro‐residue‐reinforced polypropylene composites

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