Refractive indices of binary mixtures of diglycolamine - water at various temperatures
In this work, the refractive indices nD, refractive index deviations Δ nD, molar refractions Rm and excess molar refractions REm were determined over the full range of compositions for the Diglycolamine-water binary mixture. Experimental measurements of these properties were carried out at atmospher...
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Elsevier
2025-06-01
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| Series: | Chemical Thermodynamics and Thermal Analysis |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667312625000197 |
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| author | Eduardo I. Concepción |
| author_facet | Eduardo I. Concepción |
| author_sort | Eduardo I. Concepción |
| collection | DOAJ |
| description | In this work, the refractive indices nD, refractive index deviations Δ nD, molar refractions Rm and excess molar refractions REm were determined over the full range of compositions for the Diglycolamine-water binary mixture. Experimental measurements of these properties were carried out at atmospheric pressure and at temperatures ranging from 293.15 to 333.15 K. Excess molar refractions REm and refractive index deviations Δ nD have been fitted to the polynomial Redlich-Kister equation. The refractive indices have been compared with those predicted by the mixing rules proposed by: Lorentz-Lorenz (L-L), Gladstone- Dale (G-L), Eykman (E), Arago-Biot (A-B), Eyring-John (E-J), Bruggeman (B), and Oster (OS), in order to verify their validity for the Diglycolamine-water binary system. The experimental values of the refractive indices agree well with all the previous relationships, with the relationship of Oster (OS) and Gladstone-Dale (G-L) with which better results are obtained. |
| format | Article |
| id | doaj-art-07e103ce598b43cbaa788c5dae7baee0 |
| institution | OA Journals |
| issn | 2667-3126 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
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| series | Chemical Thermodynamics and Thermal Analysis |
| spelling | doaj-art-07e103ce598b43cbaa788c5dae7baee02025-08-20T02:05:10ZengElsevierChemical Thermodynamics and Thermal Analysis2667-31262025-06-011810017910.1016/j.ctta.2025.100179Refractive indices of binary mixtures of diglycolamine - water at various temperaturesEduardo I. Concepción0Universidad Tecnológica de Panamá, Panamá; National Research System (SNI), PanamaIn this work, the refractive indices nD, refractive index deviations Δ nD, molar refractions Rm and excess molar refractions REm were determined over the full range of compositions for the Diglycolamine-water binary mixture. Experimental measurements of these properties were carried out at atmospheric pressure and at temperatures ranging from 293.15 to 333.15 K. Excess molar refractions REm and refractive index deviations Δ nD have been fitted to the polynomial Redlich-Kister equation. The refractive indices have been compared with those predicted by the mixing rules proposed by: Lorentz-Lorenz (L-L), Gladstone- Dale (G-L), Eykman (E), Arago-Biot (A-B), Eyring-John (E-J), Bruggeman (B), and Oster (OS), in order to verify their validity for the Diglycolamine-water binary system. The experimental values of the refractive indices agree well with all the previous relationships, with the relationship of Oster (OS) and Gladstone-Dale (G-L) with which better results are obtained.http://www.sciencedirect.com/science/article/pii/S2667312625000197Refractive indexDiglycolamineMixing rulesMolar refractions |
| spellingShingle | Eduardo I. Concepción Refractive indices of binary mixtures of diglycolamine - water at various temperatures Chemical Thermodynamics and Thermal Analysis Refractive index Diglycolamine Mixing rules Molar refractions |
| title | Refractive indices of binary mixtures of diglycolamine - water at various temperatures |
| title_full | Refractive indices of binary mixtures of diglycolamine - water at various temperatures |
| title_fullStr | Refractive indices of binary mixtures of diglycolamine - water at various temperatures |
| title_full_unstemmed | Refractive indices of binary mixtures of diglycolamine - water at various temperatures |
| title_short | Refractive indices of binary mixtures of diglycolamine - water at various temperatures |
| title_sort | refractive indices of binary mixtures of diglycolamine water at various temperatures |
| topic | Refractive index Diglycolamine Mixing rules Molar refractions |
| url | http://www.sciencedirect.com/science/article/pii/S2667312625000197 |
| work_keys_str_mv | AT eduardoiconcepcion refractiveindicesofbinarymixturesofdiglycolaminewateratvarioustemperatures |