Improvement of Hardness Properties of Natural Microfibers: Cotton, Kapok, and Banana as Filler-reinforced Natural Rubber Composites
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Abstract
This work studied the development of mechanical strength and hardness properties of composite natural rubber with natural microfibers of cotton, kapok, and banana at various compositions. The effect of banana fiber length has been studied. The mixed natural microfibers in the natural rubber have been formulated in the proportion of 1, 5, 10, and 15 phr, respectively. The hardness tends to increase in proportion to the natural fiber composite. The hardness measurement results found that the formula MCKB5 was obtained by mixing the fibers. Cotton: Kapok: medium-sized bananas in the proportion of 15 phr in latex had the highest hardness of 76.10 ± 3.19. The hardness distribution of Shore A shows the uniformity of cotton and kapok fibers. In addition, cotton and kapok fibers promoted the dispersion of banana fibers differently in the case of tri-fiber blends. Rubber composites with natural microfibers under such ideal conditions can improve strength and mechanical properties for reinforced material applications.
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