Development of Pinboard Using Eggshells and Ricebran
DOI:
https://doi.org/10.5281/zenodo.20559690Keywords:
eggshells, rice bran, pinboard fabrication, recycled composite materials, solid waste utilizationAbstract
The growing demand for sustainable waste management practices has prompted researchers to explore alternative uses for agricultural and food processing wastes. This study aimed to develop and evaluate an eco-friendly pinboard fabricated from eggshells and rice bran bonded with cornstarch adhesive. Specifically, the study investigated the physical and mechanical properties of the fabricated pinboards with different proportions of eggshells, rice bran, and adhesive. The study employed an experimental research design with a 3 × 3 factorial arrangement, yielding 9 treatment combinations with 4 replications each. Eggshells were cleaned, dried, pulverized, and mixed with rice bran and cornstarch adhesive according to the designated treatment ratios. The mixtures were molded and cured under sunlight before undergoing 1 physical and mechanical testing. Physical characteristics such as texture and hardness were evaluated using a modi ed hedonic rating scale. At the same time, the mechanical property, Modulus of Rupture (MOR), was tested using a Universal Testing Machine (UTM). Results revealed that treatment 9, consisting of 25% eggshells, 75% rice bran, and 40% cornstarch adhesive, produced the most acceptable pinboard in terms of texture, hardness, and bending strength. Analysis of Variance (ANOVA) showed a signi cant difference among treatments (p = 0.001), indicating that the treatment combinations signicantly influenced the mechanical properties of the fabricated pinboards. The findings demonstrate that eggshells and rice bran can serve as sustainable alternatives for producing affordable, environmentally friendly pinboards.
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