Concentration and temperature dependence of the refractive index of ethanol-water mixtures: influence of intermolecular interactions.
Eur Phys J E Soft Matter
; 30(1): 19-26, 2009 Sep.
Article
en En
| MEDLINE
| ID: mdl-19730906
ABSTRACT
The temperature and concentration dependence of the refractive index, nD(x, T), in ethanol-water mixtures agrees with previous data in the ethanol-rich concentration range. The refractive index versus concentration x determined at 20 degrees C shows the expected maximum at about 41 mol% water (22 mass% water). The temperature derivative of the refractive index, dnD/dT, shows anomalies at lower water concentrations at about 10 mol% water but no anomaly at 41 mol% water. Both anomalies are related to intermolecular interactions, the one in nD seems to be due to molecular segregation and cluster formation while the origin of the second one in dnD/dT is still not clear.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Refractometría
/
Temperatura
/
Agua
/
Etanol
Idioma:
En
Revista:
Eur Phys J E Soft Matter
Asunto de la revista:
BIOFISICA
Año:
2009
Tipo del documento:
Article
País de afiliación:
España