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

Texto completo
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]
Número total de Autores: 6
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
Número total de Afiliações: 3
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