Resumen
The method of extension of a drop was applied to evaluate the effect of electrolyte concentration (sodium chloride and ammonium chloride) on the viscosity of a conditioning shampoo. The method showed to be satisfactory employing squared glass plaques of 15 cm and 3 mm thickness. The precision of the method showed to be higher as the exposition time and the weight of the sample increased. The variability of the method allowed to attain C.I.95%<1%. The extension of the drop changes as a function of the sample weight in a cubic relationship passing through the origin although in the studied experimental interval a linear regression is sufficient. An increase in the studied electrolyte concentrations increases the viscosity up to a limit, making possible the manipulation of the shampoo's viscosity.
Título traducido de la contribución | Elementos que influyen la medición del efecto de electrolitos sobre la extensión de una gota de champú |
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Idioma original | Inglés |
Páginas (desde-hasta) | 31-45 |
Número de páginas | 15 |
Publicación | Revista Mexicana de Ciencias Farmaceuticas |
Volumen | 43 |
N.º | 2 |
Estado | Publicada - 2012 |