Surface tension of fatty acids and triglycerides |
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Authors: | Lucy D A Chumpitaz Lilian F Coutinho Antonio J A Meirelles |
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Affiliation: | 1. Department of Food Engineering, Campinas State University, Campinas, S?o Paulo, Brazil
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Abstract: | Surface tension as a function of temperature was measured for four fatty acids (lauric, myristic, palmitic, and oleic) and
two triglycerides (tricaprylin and tripalmitin). These surface tension measurements were performed using a K12 vers. 3.1 (Krüss
GmbH) tensiometer at temperatures from 20 (or the melting point of each substance) to 90°C. The constants for a van der Waals-type
correlation as well as for a linear equation are presented. Both equations are quite accurate, presenting mean deviations
not exceeding 0.570%. Such correlation constants are valuable in the design or evaluation of processing equipment, especially
that involving gas-liquid contact such as distillation and stripping columns, deodorizers, reactors, and equipment for physical
refining. |
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Keywords: | Fatty acids surface tension triglycerides |
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