AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Issue no. 4 / 2019 | |||||||
Article: |
SOYBEAN BIOESTER OBTAINED IN A BUBBLE COLUMN ESTERIFICATION REACTOR – A RHEOLOGICAL STUDY. Authors: SORINA BORAN, ANDRA TĂMĂȘ, GIANNIN MOȘOARCĂ. |
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Abstract: DOI: 10.24193/subbchem.2019.4.03 Published Online: 2019-12-20 Published Print: 2019-12-30 pp. 31-36 VIEW PDF: PDF The paper presents the rheological characterization of a bio-ester with possible lubricant properties, obtained from soybean oil fatty acids. The rheological characterization was carried out under thermostatic conditions, using a Brookfield CAP2000+L viscometer in the characteristic domain of these fluids. The variation of the apparent viscosity ηa as a function of shear rate γ and the variation of the two indices (K and n) as a function of temperature were determined, as well as the flow activation energy, Ea from Arrhenius type equations. A rheological model was proposed. Keywords: apparent viscosity, fatty acids, non-Newtonian behavior |
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