Solid-Liquid Equilibrium of Binary Systems Containing Fatty Acids and Fatty Alcohols Using Differential Scanning Calorimetry

Autor(es)

Bordon Sosa, Filipe Hobi ^[1] ; Carareto, Natalia Daniele Dorighello ^[2] ; Maximo, Guilherme Jose ^[3] ; de Almeida Meirelles, Antonio Jose ^[3] ; Costa, Mariana Conceicao ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Sch Chem Engn FEQ, Dept Proc & Prod Dev, BR-13484350 Campinas, SP - Brazil

^[2] Univ Valenciennes & Hainaut Cambresis, Inst Sci & Technol Valenciennes, Cambrai - France

^[3] Univ Campinas UNICAMP, Sch Food Engn FEA, Dept Food Engn DEA, EXTRAE, BR-13083862 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF CHEMICAL AND ENGINEERING DATA; v. 64, n. 12, p. 5017-5027, DEC 2019.
• Citações Web of Science: 0

Resumo

Fatty alcohol and fatty acid compounds are responsible for some significant characteristics of pharmaceuticals, cosmetics, and food products, such as texture and stability. A knowledge of the solid-liquid equilibrium (SLE) behavior of such mixtures is necessary to enhance production processes as well as to upgrade their home and industrial usage. In this study, the SLE phase diagrams of five binary mixtures composed of fatty alcohol compounds and fatty acids, namely, 1-dodecanol, 1-tetradecanol, 1-hexadecanol, lauric acid, myristic acid, and palmitic acid, were determined using differential scanning calorimetry (DSC). A polarized light microscope was used to complement the characterization of phase diagrams, which have shown complex global behavior with eutectic and peritectic points as well as solid solution formation. The SLE data were fitted using the Margules 2-suffix and Margules 3-suffix and the UNIFAC and UNIFAC Dortmund models. The modeling approach using the Margules 3-suffix equation best represented the experimental data. (AU)

• Processo FAPESP: 14/21252-0 - Equilíbrio e processos de produção de biocombustíveis e bioprodutos
• Beneficiário: Antonio José de Almeida Meirelles
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/08566-1 - Termodinâmica do equilíbrio de fases para o melhoramento das propriedades físicas de bioprodutos alimentícios e sua predição em processos industriais e digestivos
• Beneficiário: Guilherme José Maximo
• Modalidade de apoio: Auxílio à Pesquisa - Regular