Process for preparing nonionic surfactant sorbitan fatty acid esters with and without previous sorbitol cyclization (CROSBI ID 85992)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Giacometti, Jasminka ; Milin, Čedomila ; Wolf, Nikola ; Giacometti, Fabio
engleski
Process for preparing nonionic surfactant sorbitan fatty acid esters with and without previous sorbitol cyclization
The purpose of this work was to determine the course of the esterification reaction of hexitols and a long chain length fatty acid at different temperatures. Sorbitol esters of lauric were prepared by the esterification of sorbitol and lauric acid (molar ratio, 1:1) in the presence of p-toluenesulfonic acid as a catalyst. The esterification was carried out at 140, 150, 160, and 180oC, with and without sorbitol cyclization, under atmospheric pressure. The reaction course was followed by taking samples after 15, 30, 45, 60, 90, 120, and 150 min, and determining the acid value. The results shows that the conversion of lauric acid is better if sorbitol is previously cycled at all examined temperatures. This work presents one possible solution to a problem that should be of interest to surfactant and carbohydrate chemists.
nonionic surfactants; sorbitan fatty acid esters; rate of esterification; color of the esterification product
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Podaci o izdanju
44 (12)
1996.
3950-3954
objavljeno
0021-8561
10.1021/jf950314j
Povezanost rada
Prehrambena tehnologija