Aliphatic polyesters are a type of polymer made from linear chains of ester groups. They are derived from natural or synthetic sources and are known for their biodegradability, making them environmentally friendly. Common examples include polylactic acid (PLA) and polycaprolactone (PCL), which are used in various applications such as packaging, textiles, and medical devices. These materials are characterized by their flexibility and low melting points, which allow for easy processing. Aliphatic polyesters can be produced through different methods, including ring-opening polymerization and condensation polymerization. Their unique properties make them suitable for a wide range of uses in sustainable products.