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Due to its chemical composition, biodiesel is very susceptible to oxidation, making it necessary to add antioxidants that inhibit or delay this process. However the antioxidants are exposed to conditions that can degrade them, reducing their efficiency. This way, the use of nanospheres (NE) appears as an alternative to provide their protection. In this sense, the objective of this work was to develop NE of polyɛ-caprolactone containing the antioxidant terc-butylhydroquinone and apply them in biodiesel. The method used in the production of NE was emulsification-evaporation of the solvent and the stability was evaluated during 31 days in the greenhouse at 30°C, being analyzed the size, polydispersion, zeta potential, antioxidant activity and pH during the period studied, besides the evaluation of the induction time of biodiesel containing NE. After the analyzed period, NE suffered statistically significant variations in pH (6.20 to 7.63), zeta potential (-12.50 mV to -13.83 mV) and antioxidant activity (84.4 to 51%). As for IT, the addition of NE to biodiesel did not result in significant variations.

brazilian journal of development

NANOPARTÍCULAS DE POLI-Ε-CAPROLACTONA CONTENDO TBHQ: DESENVOLVIMENTO, CARACTERIZAÇÃO E APLICAÇÃO / POLI NANOPARTICLES-Ε-CAPROLACTON CONTENTS TBHQ: DEVELOPMENT, CHARACTERIZATION AND APPLICATION