• Modulus: The modulus of a polymer refers to its stiffness or resistance to deformation under stress. CO₂-derived polymers have shown promising results in terms of modulus, but further tuning of the polymerization parameters is needed to achieve the desired balance between stiffness and flexibility. Polymers like polyurethanes derived from CO₂ are gaining attention due to their relatively high modulus, making them useful in applications such as foams and coatings [43]