Development and Characterization of Particle Board from Maize Cob by Using Polyvinyl Acetate Adhesive
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Date
2024-06
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Addis Ababa University
Abstract
Waste management and recycling have led to numerous studies on particleboard production.
The problems we face globally are clear responses to human resource mismanagement, including global warming, sea-level rise, floods, and earthquakes. This study attempted to use milled corncob and polyvinyl acetate to produce particleboard. This research was aimed to produce a particleboard from corncob with the addition of polyvinyl acetate resin as an adhesive. Further, characterization of the developed particleboard has been conducted against to some selected quality attributes of the product, including density, water absorption, thickness, moisture content, and flexural strength. Furthermore, some control variables (temperature, pressure and polyvinyl acetate) were considered for their effects on the quality of the outlined particleboard. The decline of the world's forest reserves, rising prices of wood products, and environmental concerns about particleboard have led governments and scientists to explore alternative renewable energy sources, feasibility, market competition, and environmental acceptance. To achieve the outlined study, a total of 27 experimental trials were generated from different formulations of the selected process parameters using a general factorial design. The formulations of maize cob particle to polyvinyl acetate were defined at 70:30, 65:35, and 60:40. These formulations were poured into a mold with dimensions of 100mm x 100mm x 15mm. Findings of this study showed that as the polyvinyl acetate content increased from 30-40g, the hardness of maize cob increased from710 to2930N.The board densities varied between 407.384 and 642.944 kg/m3. With increasing immersion time, the percentage of water absorption increased from 37.44 to 100.The It was discovered that all boards had an average moisture content of 68.72%. The mean bending stress (flexural strength) was 3.7605Mpa, a relatively low bending strength compared with urea but higher strength than starch resin-made particle board. Also, the thickness of the particleboard ranges between 6.325 and 9.325mm. In conclusion, the results of this study showed that the particleboard prepared from the combination of maize cob and polyvinyl acetate would be used as an alternative for ceiling roofs, building and furniture applications. The outcome of this study may serve as a guideline for any manufacturer who intends to use corn cob as supplement for production of particleboards.
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Keywords
Particle Board, Maize Cobs, Polyvinyl Acetate, Flexural Strength