Geosynthetics are commonly manufactured using a variety of polymers, with high-density polyethylene (HDPE), polypropylene (PP), and polyester (PET) being the most popular choices. These polymers are selected for their exceptional resistance to chemical and biological degradation. To enhance specific properties like weathering resistance and UV resistance, manufacturers often introduce additives or modifiers into the polymer blend. In certain specialized applications demanding extraordinary strength, polymers such as aramids or polyvinyl alcohol (PVA) may be utilized. Following is the introduction of these three main materials.