Hernandez Fernandez, JoaquinPérez Mendoza, JaimeOrtega-Toro, Rodrigo2024-05-102024-05-102024-04-212024-05-10Hernández-Fernández, J.; Pérez-Mendoza, J.; Ortega-Toro, R. Quantification of Irgafos P-168 and Degradative Profile in Samples of a Polypropylene/Polyethylene Composite Using Microwave, Ultrasound and Soxhlet Extraction Techniques. J. Compos. Sci. 2024, 8, 156. https://doi.org/10.3390/jcs8040156https://hdl.handle.net/20.500.12585/12669In polypropylene/polyethylene composite (C-PP/PE) production, stabilizing additives such as Irgafos P-168 are essential as antioxidant agents. In this study, an investigation was carried out that covers different solid–liquid extraction methods (Soxhlet, ultrasound, and microwaves); various variables were evaluated, such as temperature, extraction time, the choice of solvents, and the type of C-PP/PE used, and the gas chromatography coupled to mass spectrometry (GC-MS) technique was used to quantify the presence of Irgafos P-168 in the C-PP/PE samples. The results revealed that microwave extraction was the most effective in recovering Irgafos P-168. A recovery of 96.7% was achieved when using dichloromethane as a solvent, and 92.83% was achieved when using limonene as a solvent. The ultrasound technique recovered 91.74% using dichloromethane and 89.71% using limonene. The Soxhlet extraction method showed the lowest recovery percentages of 57.39% using dichloromethane as a solvent and 55.76% with limonene, especially when the C-PP/PE was in the form of pellets. The degradation products that obtained the highest degradation percentages were Bis (di-test-butyl phenyl) phosphate and Mono (di-test-butyl phenyl) phosphate using the microwave method with dichloromethane as a solvent and PP in film. Finally, the possible mechanisms for forming the degradation compounds of Irgafos P-168 were postulated21 páginasapplication/pdfenghttp://creativecommons.org/publicdomain/zero/1.0/info:eu-repo/semantics/article10.3390/jcs8040156Polypropylene/polyethylene composite (C-PP/PE)Irgafos P-168Extraction methodsinfo:eu-repo/semantics/openAccessCC0 1.0 UniversalUniversidad Tecnológica de BolívarRepositorio Universidad Tecnológica de BolívarLEMB