Use of maize cob for production of particleboard

Ciência e Agrotecnologia

Mário Vanoli Scatolino²  Danillo Wisky Silva¹  Rafael Farinassi Mendes¹  Lourival Marin Mendes¹ 

[1],Universidade Federal de LavrasLavras MG ,Brasil

关键词: Environmental problems;    reuse;    physicomechanical properties;    agricultural residues;    Problemas ambientais;    reaproveitamento;    propriedades físico-mecânicas;    resíduos agrícolas;   

DOI  :  10.1590/S1413-70542013000400006

来源: SciELO

【 摘 要 】

Agricultural residues are materials generated in large quantities in Brazil and can accumulate to such extent as to cause environmental problems. Among agricultural residues, maize cob is one worthy of notice, and an alternative use for maize cob would be to produce particleboard panels in association with wood particles. This study aimed to evaluate the feasibility of using maize cob for production of particleboard panels. The following maize cob percentages were used: 0%, 25%, 50%, 75% and 100%, in association with particles of Pinus oocarpa wood. Panels were made with 8% of urea formaldehyde and 1% of paraffin (based on dry weight of particles). For compressing the panels, a pressure of 3.92 MPa was applied at a temperature of 160º C, for 8 minutes. Increased replacement of pinewood by maize cob residue promoted significant improvements to the properties water absorption after two hours of immersion, thickness swelling after two and after twenty-four hours of immersion. Mechanical properties had a decreasing correlation with the maize cob percentage being incorporated.

【 授权许可】

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