Semisynthetic polymers are derived from natural polymers but are chemically modified to improve their properties or create new materials with specific applications. Used in a variety of industries, including plastics, rubber, and textiles. Examples include cellulose acetate (used in films and textiles), nylon (used in fibers and plastics), and rayon (used in textiles). Semisynthetic polymers often have a combination of natural and synthetic properties, making them suitable for a wide range of applications. Monomers: Used in the production of polyurethanes, which are widely used in foams, adhesives, coatings, and elastomers. Macromonomers: Can be used to make polymers with specific properties, such as increased flexibility and strength, through controlled polymerization techniques.