Polycaprolactone (PCL) is a biodegradable polyester that is commonly used in various applications, including 3D printing, medical devices, and packaging. It is known for its flexibility, low melting point, and ability to degrade in the environment, making it an attractive alternative to traditional plastics. PCL is synthesized through the ring-opening polymerization of ε-caprolactone, a cyclic ester. Its properties allow it to be easily processed and molded, which is beneficial in creating products that require specific shapes and forms. Additionally, PCL can be blended with other materials to enhance its performance in different applications.