Properties of particleboard produced from discard sawdust and cassava waste blends

O. Samuel, Ajayi R Oyelayo, P. A. Oghenekowho, Idubor I Fabian, Akpeji Bh, I. Emovon
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Abstract

The felling of wood has resulted in environmental problems such as deforestation and climatic change. One way of solving this problem of high demand is by sourcing alternative raw materials for the production of particleboards. In the prevailing literature, there is a lack of methodical studies including variation water adsorption of particleboards developed from sawdust and cassava waste (starch) in the tropics and exposure period, and trends of compaction and bulk density of the particleboard and cement fraction. In this research, for (i) enhancing the particleboard produced from sawdust waste and cassava starch, (ii) increasing use of cement fraction was employed, (1) key properties particleboard produced were determined according to ASTM standards, and (2) finally, regression models as a function of cement content were postulated for the water adsorption. The water-absorbent of the particleboard increased with the increase in the exposure period and cement content. Water adsorption (W a ) is correlated with cement fraction through the least square regression method. The quadratic equation is appropriate for W a at the different exposure periods. The R 2 values range from 0.9984 to 0.9996, expressing these equations marginally reflect the discrepancy of W a . The higher changes in the compressive strength and bulk density of the particleboards at the higher cement blend compared to those lower and no cement blends, implying better compaction between the mixture of sawdust-starch. The results of the study can help physical property collection for the particleboard industry and guide for improving the properties of particleboards in the tropics.
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用废弃木屑和木薯废料混合制成的刨花板的性能
砍伐木材导致了诸如森林砍伐和气候变化等环境问题。解决这一高需求问题的一种方法是为生产刨花板寻找替代原材料。在主流文献中,缺乏系统的研究,包括热带地区和暴露期由木屑和木薯废料(淀粉)制成的刨花板的吸水变化,以及刨花板和水泥组分的压实和体积密度的趋势。在本研究中,(i)提高了木屑废料和木薯淀粉生产刨花板的性能,(ii)增加了水泥用量,(1)根据ASTM标准确定了生产的刨花板的关键性能,(2)最后,假设了水泥用量对吸水性能的回归模型。刨花板的吸水率随暴露时间和水泥掺量的增加而增加。通过最小二乘回归方法,将水吸附量(wa)与水泥掺量相关。二次方程适用于不同曝光时间下的wa。r2的取值范围为0.9984 ~ 0.9996,说明这些方程在一定程度上反映了wa的差异。水泥掺量高的刨花板的抗压强度和体积密度比水泥掺量低和不掺水泥的刨花板的变化更大,这意味着木屑-淀粉混合物之间的压实效果更好。研究结果可为刨花板工业的物理性能收集提供帮助,并为改善热带地区刨花板的性能提供指导。
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