Effect of organophosphate antioxidant on the thermo-oxidative degradation of a mineral oil |
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| Authors: | Maria Alexsandra de Sousa Rios Selma Elaine Mazzetto |
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| Institution: | 1. Departamento de Química – Grupo de Inova??es Tecnológicas e Especialidades Químicas - GRINTEQUI, Universidade Federal do Piauí, Campus Ministro Petr?nio Portella, Teresina, PI, CEP 64.049-550, Brazil
2. Departamento de Química Organica e Inorganica – Laboratório de Produtos e Tecnologia em Processos - LPT, Universidade Federal do Ceará, Campus do Pici, Bloco 935, Fortaleza, CE, CEP 60.455-760, Brazil
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| Abstract: | This study shows the synthesis, characterization, and evaluation of the effect of organophosphate antioxidant on the thermo-oxidative degradation of a mineral oil. The organophosphate was synthesized by nucleophilic substitution (SN2) of hydrogenated cardanol. For this study, were employed thermogravimetry, derivative thermogravimetry, differential scanning calorimetry, and differential thermal analysis techniques. The results showed that organophosphate contributed for thermo-oxidative stability of mineral oil (initial decomposition temperature (IDT) mineral oil: 91.28 °C < IDT mineral oil + organophosphate (1%): 156.42 °C). The organophosphate obtained shows significant thermal stability when compared with other compound of the same class (diphenyl phosphate). |
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