Diamine monomers contain two amino groups (-NH2), making them highly reactive and capable of forming strong hydrogen bonds. Monomers: Used in the synthesis of polyurethanes, polyamides, and other polymers. They act as crosslinkers, enhancing the mechanical and thermal properties of the resulting polymers. Macromonomers: Can be incorporated into copolymers to improve the durability and chemical resistance of the material. They are also used in the production of advanced materials such as shape memory polymers.