Resumo

DELGADO TOBON, Arnoldo Emilio  e  RODRIGUEZ, Esperanza. Synthesis of mono di tri acetyl glycerols from glycerin technical degree. Tecciencia [online]. 2020, vol.15, n.29, pp.23-30.  Epub 19-Maio-2021. ISSN 1909-3667.  https://doi.org/10.18180/tecciencia.2020.29.3.

Mono, di, tri acetyl glycerols (MDTAG) were synthesized from technical grade glycerin , as an alternative for the use of glycerol generated by the biodiesel industry. The esterification, was done using molar ratio (acetic acid: glycerin 1:6), at laboratory scale, toluene was added as a dragging agent to periodically remove the water of the reaction. Ion exchange resin was used as a heterogeneous catalyst. MDTAG were characterized using infrared spectroscopy (FT-IR). The low temperature behavior was analyzed by means of differential scanning calorimetry (DSC). MDTAG obtained experimentally showed excellent performance at temperatures below 0 °C. This result makes MDTAG potentially considered as additives to improve the low-temperature fluidity of biolubricant bases (from modified vegetable oils).

Palavras-chave : mono di tri acetyl glycerol; acetylation; calorimetry; spectroscopy.

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