The difference between 15 and 25% filler content was significant; but the difference between these two percentages and 35% filler content was much more pronounced. It was caused by the filler agglomeration that might have happened during mixing, which can lead to extra voids in the texture and also caused some surface roughness in the case of higher filler content. Karmakar et al. reported that the absolute water contents after the maximum absorption time remain the same in the case of jute fiber-reinforced PP composites,although the rate of water absorption depends upon the fiber orientation in the composites. Moisture diffusion into the polymer depends on molecular and microstructural aspects such as polarity, the extent of crystallinity, thermoplasticity, and the presence of residual hardeners or other water attractive species. Maggana and Pissis studied the absorption and diffusion of water in epoxy system.