Poly(ethylene glycol) diglycidyl ether is widely used as a crosslinking agent in the production of polymers and resins. It is particularly effective in enhancing the mechanical properties and thermal stability of materials. In the biomedical field, it is utilized to modify surfaces of medical devices to improve biocompatibility and reduce protein adsorption. Additionally, it serves as a key component in the formulation of adhesives and coatings, providing excellent adhesion and durability. Its epoxy functional groups make it valuable in creating networks within hydrogels, which are applied in drug delivery systems and tissue engineering scaffolds.