The strength of a maleic anhydride grafted polymer depends on several factors, including the specific polymer being grafted, the amount of maleic anhydride grafted onto the polymer, and the conditions under which the grafting reaction took place.

Maleic anhydride grafted polymers generally exhibit improved mechanical properties, such as tensile strength and impact resistance, due to the introduction of the maleic anhydride functional group, which can crosslink with other polymers or react with other chemical groups to form stronger bonds.

The maleic anhydride grafting process can also increase the compatibility between the polymer and other materials, resulting in improved adhesion and overall performance. The degree of grafting and the molecular weight of the grafted polymer can also affect its strength and mechanical properties.

In general, maleic anhydride grafted polymers have been shown to exhibit improved strength and durability compared to unmodified polymers, making them useful in a variety of applications, such as coatings, adhesives, and composites. However, the specific strength of a maleic anhydride grafted polymer can vary widely depending on the specific polymer and the conditions under which it was grafted.