Electronic Resource
Oxford, UK
:
Chapman and Hall
International journal of cosmetic science
19 (1997), S. 0
ISSN:
1468-2494
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
The phase diagram water, phenethyl alcohol and laureth 4 was determined and the variation of the vapour pressure of the alcohol was determined during evaporation using gas chromatographic head-space analysis. The phase changes during evaporation were estimated from the phase diagram and compared to the appearance of the emulsion using optical microscopy. The transfer of the fragrance ingredient between different phases during the process was estimated and its measured vapour pressures compared to those calculated from values of earlier determination in different phases in the system. The agreement was good. On a elabore le diagramme de phase eau, alcool phenethylique et laureth 4 et on a determine la variation de la tension de vapeur de l'alcool durant l'evaporation en utilisant l'analyse par chromatographie gazeuse a injection directe en tete de colonne. Les changements de phase durant l'evaporation sont estimes a partir du diagramme de phase et compares a l'aspect de l'emulsion par microscopie optique. On a estime le transfert de l'ingredient parfume entre les differentes phases durant le processus et ses tensions de vapeur mesurees ont ete comparees a celles calculees a partir de valeurs determinees anterieurement dans differentes phases du systeme. La concordance est satisfaisante.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1467-2494.1997.tb00190.x
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