Performance of novel biobased stabilizers: Long-term thermal and UV stability of polypropylene

• Development and evaluation of novel bio-based stabilizers, including benzoates, cinnamates, and phenyl propionates, focusing on polypropylene stabilization. • Phenyl propionates showed superior long-term thermal stability compared to other structures. • Higher substituted molecules outperformed less functionalized phenols in mechanical property assessments and photo stability. Development and evaluation of novel bio-based stabilizers including benzoates, cinnamates and phenyl propionates are presented, focusing on long-term thermal and UV stabilization performance of polypropylene. The synthesized structures include benzoates, cinnamates and phenyl propionate esters. Long-term thermal studies indicated that phenyl propionates provided superior stability compared to other structures. The analysis of carbonyl indices during accelerated aging showed lower values for phenyl propionate additives too, highlighting their effective stabilization capabilities. Double-substituted phenols outperformed mono-substituted ones in mechanical property assessments. Benzoates seem to be the only derivatives to provide some UV stability. Overall, the results suggest that the synthesized bio-based antioxidants could serve as promising alternatives to conventional stabilizers, offering potential benefits for more sustainable applications in various industries.