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Plastic products are widely used because of their lightweight, easy to shape, non-corrosive, diverse colors, very easy storage, and can be reused. However, plastic waste is very difficult to completely decomposed by microorganisms. The process requires a long time due to the material used comes from non-renewable sources of petroleum. One type of plastic is Polyethylene (PE). PE plastic polymers have very strong chemical bonds and these polymer fibers blend together with each other so that other properties of this type of PE plastic make it difficult to degrade by nature. Therefore, one of the solution to solve this environmental problem is to combine composites using natural polymers, one of it is keratin. Keratin is a biopolymer found in chicken feathers which can be degraded by microorganism. Keratin from chicken feathers can be used as fillers to in PE to improve its biodegrebility. In addition, keratin reinforced Polyethylene (PE) offers a combination of good characteristics for biodegradable composites, good thermal stability and good chemical resistance.Composite was prepared by mixing soluble keratin and polyethylene at various ratios. Composites was characterize of plastics was characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, and differential scanning calorimetry. Utilization of chicken feather keratin which is used as a composite material requires a method to turn chicken feathers into nano keratin fiber. The results showed chicken feather-keratin/polyethylene composite can be synthesized at various ratio, however the best physical character need to be further analyzed.