Document Type : Regular Article
Authors
1
Department of Chemistry, College of Science, Mustansiriyah University, Baghdad, Iraq
2
Department of Chemistry, College of Science, Al-Nahrain University, Baghdad, Iraq
3
Polymer Research Unit, College of Science, Al-Mustansiriyah University, Baghdad 10052, Iraq
4
School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
5
Department of Chemistry, College of Science, Al-Nahrain University, Baghdad 64021, Iraq
6
Department of Chemical Industries, Institute of Technology-Baghdad, Middle Technical University, Baghdad, Iraq
7
Polymer Research Unit, College of Science, Mustansiriyah University, Baghdad, Iraq
10.22036/pcr.2023.422504.2439
Abstract
Photostabilizing polymeric materials is vital in safeguarding against aging and ultraviolet (UV) irradiation. Consequently, the modification of polymers to enhance their resilience to photodegradation and photooxidation during prolonged exposure to UV light in challenging settings becomes imperative. Notably, recent advancements have led to the design and synthesis of various polymeric additives, with their potential utility as photostabilizers being extensively investigated.
In this context, thin films of Polylactic acid (PLA) were developed, incorporating diverse concentrations of naringin alongside the commercial stabilizer TINUVIN 622. The study focused on assessing the role of naringin and TINUVIN 622 as effective UV blockers against PLA photodegradation. Detailed examination encompassing weight loss analysis, surface morphology observations, determination of the photodecomposition rate constant Kd, and analysis of changes in infrared spectra of irradiated polymeric blends, revealed the efficacy of 0.075% naringin concentration in significantly mitigating UV-induced degradation, thereby providing PLA with robust protection. Overall, the study demonstrated that 0.075% naringin emerged as the most efficient additive in stabilizing PLA against UV-induced degradation.
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