Palm fronds and mango's dry leaves are examples of the agricultural wastes (AW),
which are added as reinforcement materials for the polyester, as one of the polymer
composites. This work is to investigate the effectiveness of these reinforcements in
improving the tribological properties of the polyester composite. Two factors have been
taken into consideration when designing the experiment. First is the size of the added
particles; soft and hard particles with 0.5 mm and 3 mm particle size respectively were
used. Second factor is the percent of the weight of the added waste (WOAW %) to the
weight of the whole test specimen, ranging from 0% to 50%. A Pin-on-disc tribometer
has been used to perform the tribological measurements. Polynomial regression analyses
have been made. Trends and Coefficients of correlation have been obtained and used as
the assessment measures. The results show that agricultural wastes improve the
tribological properties of polyester composite.