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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Vapor pressure data for fatty acids obtained using an adaptation of the DSC technique

Full text
Author(s):
Matricarde Falleiro, Rafael M. [1] ; Akisawa Silva, Luciana Y. [2] ; Meirelles, Antonio J. A. [3] ; Kraehenbuehl, Maria A. [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, LPT, DPQ, Fac Engn Quim, BR-13083852 Campinas, SP - Brazil
[2] Univ Fed Sao Paulo, Dept Ciencias Exatas & Terra, BR-09972270 Diadema, SP - Brazil
[3] Univ Estadual Campinas, EXTRAE, DEA, Fac Engn Alimentos, BR-13083862 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Thermochimica Acta; v. 547, p. 6-12, NOV 10 2011.
Web of Science Citations: 13
Abstract

The vapor pressure data for lauric (C-12:0), myristic (C-14:0), palmitic (C-16:0), stearic (C-18:0) and oleic (C-18:1) acids were obtained using Differential Scanning Calorimetry (DSC). The adjustments made in the experimental procedure included the use of a small sphere (tungsten carbide) placed over the pinhole of the crucible (diameter of 0.8 mm), making it possible to use a faster heating rate than that of the standard method and reducing the experimental time. The measurements were made in the pressure range from 1333 to 9333 Pa, using small sample quantities of fatty acids (3-5 mg) at a heating rate of 25K min(-1). The results showed the effectiveness of the technique under study, as evidenced by the low temperature deviations in relation to the data reported in the literature. The Antoine constants were fitted to the experimental data whose values are shown in Table 5. (C) 2012 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 09/54137-1 - Acquisition of a particle size/distribution analyzer, a zeta potential measurement system, a spray dryer, and an ultra-high-pressure liquid chromatograph/mass spectrometer
Grantee:Miriam Dupas Hubinger
Support Opportunities: Multi-user Equipment Program
FAPESP's process: 08/08706-1 - Experimental Determination of Vapor-Liquid Equilibria Data of Binary Mixtures Fatty Acid Ethyl Esters and Fatty Acids by means of DSC.
Grantee:Rafael Mauricio Matricarde Falleiro
Support Opportunities: Scholarships in Brazil - Doctorate