Abstract
Abstract Recently, most buildings and automobile industry products were made of biodegradable composite materials. In this work, biodegradable sisal fiber-reinforced poly lactic acid (PLA) and sisal/polyester composites were fabricated using compression molding and hand lay-up techniques, respectively. The effect of fiber loading (10%, 20%, 30% weight) on water absorption behavior of sisal/polyester and sisal/PLA composites at room temperature has been investigated. Water absorption analysis of composites was carried out in terms of water uptake and diffusion coefficient. The weight gain of composites was measured until the saturation state reached. The results revealed that as fiber content increased, moisture absorption of composites increased. It has been observed that the water absorption pattern of these composites, follow Fickian behavior. The water uptake of sisal fiber-PLA and sisal fiber-polyester composites at maximum fiber loading was 23.36% and 22.39%, respectively. The diffusion coefficient of sisal fiber reinforced PLA and sisal/polyester composites was 17.58 × 10−07 mm2/s and 16.50 × 10−07 mm2/s, respectively.
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