TY - JOUR AU - Alvarado-Montero, Hermes R. AU - Monge-Montero, Carmen AU - Vargas, MarĂ­a Sol AU - Lutz, Giselle AU - Mata-Segreda, Julio F. PY - 2018/09/21 Y2 - 2024/03/28 TI - Absence of a molecular structural effect on the thermodynamic properties of several biodiesel materials JF - UNED Research Journal JA - URJ VL - 10 IS - 2 SE - Articles DO - 10.22458/urj.v10i2.1988 UR - https://revistas.uned.ac.cr/index.php/cuadernos/article/view/1988 SP - 362-367 AB - <p>In the search to develop the production of vegetable oils for non-food purposes biodiesel stands out for its great versatility as technical material and a cleaner energy technology. Physic nut (<em>Jatropha curcas</em>), castor-oil (<em>Ricinus communis</em>), oil palm (<em>Elaeis guineensis</em>), wine palm (<em>Attalea butyracea</em>) and macaw palm (<em>Acrocomia aculeata</em>) were chosen for study in our laboratory, because they are oleaginous plants with convenient oil yields to produce biodiesel.<strong> </strong>No significant effect from the nature of fatty-acid chains in biodiesel is observed on thermodynamic properties such as heat of combustion, cubic-expansion thermal coefficient, isothermal compressibility, enthalpy of vaporisation and Hildebrand solubility parameter. Activation energies for viscous flow of biodiesels correlates with the same property of their vegetable oil feedstocks.</p> ER -