Solid-liquid phase equilibrium diagrams of binary mixtures containing fatty acids, fatty alcohol compounds and tripalmitin using differential scanning calorimetry

Autor(es)

Pelaquim, Fernanda Paludetto ^[1] ; de Matos, Flavio Cardoso ^[2] ; Cardoso, Lisandro Pavie ^[3] ; Caldas Batista, Eduardo Augusto ^[2] ; de Almeida Meirelles, Antonio Jose ^[2] ; da Costa, Mariana Conceicao ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Sch Chem Engn, Dept Proc & Prod Dev, 500 Albert Einstein Ave, BR-13083852 Campinas, SP - Brazil

^[2] Univ Campinas UNICAMP, Sch Food Engn, Dept Food Engn, 500 Albert Einstein Ave, BR-13083852 Campinas, SP - Brazil

^[3] Univ Campinas UNICAMP, Inst Phys Gleb Wataghin IFGW, Dept Appl Phys, 500 Albert Einstein Ave, BR-13083852 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Fluid Phase Equilibria; v. 497, p. 19-32, OCT 1 2019.
• Citações Web of Science: 0

Resumo

Fatty acids, fatty alcohol compounds and triacylglycerols (TAGs) present a significant role in industrial applications, mainly in food, cosmetics and pharmaceutical industries. In this study, eight solid-liquid phase diagrams composed by tripalmitin plus fatty acids (capric acid, lauric acid, myristic acid, palmitic acid and stearic acid) and tripalmitin plus fatty alcohol compounds (1-decanol, 1-dodecanol and 1-tetradecanol) were studied using Differential Scanning Calorimetry (DSC) technique, optical microscopy and X-ray analysis. The phase diagrams formed by tripalmitin + fatty acids (myristic acid, palmitic acid and stearic acid), present a eutectic behavior with a solid solution for tripalmitin (1) + myristic acid (4) system, and a monotectic behavior for tripalmitin + (capric acid and lauric acid) whereas the phase diagrams formed by tripalmitin + fatty alcohol compounds present a monotectic behavior and just one of them present a monotectic behavior with a solid solution (1-tetradecanol). The liquid phase was modelled using ideal assumption, 3-suffix Margules and NRTL models, adjusting its parameters. These models described properly the liquidus line of the systems studied. (C) 2019 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 14/21252-0 - Equilíbrio e processos de produção de biocombustíveis e bioprodutos
• Beneficiário: Antonio José de Almeida Meirelles
• Linha de fomento: Auxílio à Pesquisa - Temático