Functional additives including maleic anhydride have a significant impact on the polymer’s thermal stability and resistance to degradation. Due to their capacity to improve the characteristics of polymers, functional additives containing maleic anhydride have attracted considerable interest in the field of polymer research. Maleic anhydride functional additives are added to the polymer to increase its thermal stability and resistance to deterioration. Improvement of Thermal Stability: It has been discovered that functionalized maleic anhydride additions improve the thermal stability of polymers. The additives’ maleic anhydride groups enable them to engage strongly with the polymer matrix, which enhances their heat stability. These interactions make polymers appropriate for use in sectors like automotive and aerospace because they can stop polymers from degrading at high temperatures. By creating covalent connections with the polymer chains, functionalized maleic anhydride additives can increase heat stability in one way. The polymer is more resistant to thermal breakdown as a result of the covalent bonding, which boosts the polymer’s overall stability. Additionally, by scavenging free radicals produced during thermal degradation processes, maleic anhydride functionalized additives can serve as heat stabilizers. This scavenging activity increases the polymer’s heat stability by halting the spread of breakdown processes.     Increasing Resistance to Degradation: Maleic anhydride functionalized additives boost polymers’ resistance to degradation in addition to their thermal stability. Multiple causes, including exposure to UV radiation, oxidation, and chemical attack, can cause polymers to degrade. Maleic anhydride functionalized additives can slow down these processes of degradation and increase the useful life of polymers. Maleic anhydride functionalized additives can operate as UV stabilizers, which helps to increase their resistance to deterioration. These additives have the capacity to absorb UV radiation and release the energy as heat, so blocking it from entering the polymer matrix. Maleic anhydride functionalized additives can stop degradation processes including photooxidation and chain scission by lowering the UV light exposure of polymers. Additionally, functionalized additives with maleic anhydride can improve the chemical resistance of polymers. The additives’ maleic anhydride groups can interact with environmental reactive species to create stable chemical bonds. By thwarting chemical attacks on the polymer matrix, this process stops polymer breakdown. As a result, polymers that contain functionalized maleic anhydride additions show better resistance to chemical deterioration. Applications of Functionalized Maleic Anhydride Additives: Maleic anhydride functionalized additives are ideal for a variety of applications due to their improved thermal stability and resistance to degradation. These additives can be integrated into polymer composites used for engine components in the automobile sector, assuring their durability and dependability at high temperatures. Similar to this, in the aerospace sector, functionalized maleic anhydride additions can be employed to increase the polymers’ thermal stability and resistance to deterioration. Additionally, functionalized maleic anhydride additives may find use in the packaging sector. The shelf life of packaged goods can be increased by preventing degradation brought on by exposure to UV radiation and chemical attack by adding these additives into polymer films and coatings. These additives can also make packaging materials more thermally stable so they can endure high-temperature sterilizing procedures.