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Interactions between aroma compounds and latex films: partition coefficients and influence on latex film formation
Author(s) -
Nestorson A.,
Leufvén A.,
Järnström L.
Publication year - 2005
Publication title -
packaging technology and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 50
eISSN - 1099-1522
pISSN - 0894-3214
DOI - 10.1002/pts.710
Subject(s) - aroma , styrene , chemistry , partition coefficient , hildebrand solubility parameter , polymer chemistry , styrene butadiene , aroma compound , organic chemistry , ethyl butyrate , acrylate , talc , solubility , materials science , food science , composite material , polymer , copolymer
The potential of various latex grades to take up, retain and release different types of aroma compound has been explored. The latex grades used included two styrene–acrylate latices and two styrene–butadiene latices, of which one contained talc. The aroma compounds used were ethyl butyrate, 1‐hexanol, heptanal, 3‐octanone, α‐pinene and limonene dissolved in propylene glycol. It was shown that talc improves both the uptake of aroma compounds in the dispersion phase and the retention during the film formation process. However, the styrene–acrylate latex had a greater ability than the styrene–butadiene latex to hold the aroma compounds once the films were formed. These results have been compared to calculated solubility parameters. The uptake of 1‐hexanol and propylene glycol in the latex dispersions were higher than expected from the theoretical calculations, probably because of the amphiphilic nature of these molecules. In addition, the influence of aroma compounds on the film formation was evaluated. Copyright © 2005 John Wiley & Sons, Ltd.