Abstract

In this paper the Effect of Compressive and flexural properties of cow dung/glass fiber reinforced polyester
hybrid composites were studied. In order to make pollution freely is very important to prepare eco-friendly
composites. Two different hybrid composites such as treated and untreated cow dung fibers were fabricated and
effect of alkali treatment of the cow dung fibers on these properties were also studied. It was observed that
Compressive and flexural properties of the hybrid composites increase with increase of cow dung percentage of
weight. These properties found to be higher when alkali treated cow dung fibers were used in the hybrid
composites. The elimination of amorphous hemi-cellulose with alkali treatment leading to higher crystalline of
the cow dung fibers with alkali treatment might responsible for these observations. The effect of alkali treatment
on the bonding between glass / cow dung composites was also studied. Scanning electron microscope (SEM)
were also conducted on the cross sections of fractured surfaces in order to rate the performance hybrid
composites were also identified.