Catálogo de publicaciones - tesis
Título de Acceso Abierto
Caracterización de partículas nanométricas por técnicas de dispersión de luz: Estimación de distribuciones de tamaños en látex poliméricos
Luis Alberto Clementi Jorge Rubén Vega Adriana Brandolin César Alejandro Olivieri Gloria Lia Frontini Luis Marcelino Gugliotta
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Resumen/Descripción – provisto por el repositorio digital
This thesis proposes new methods for estimating the particle size distribution (PSD) of polymeric latex that involve spherical particles with both homogeneous and non-homogeneous core-shell morphology, based on light scattering measurements. In particular, it is presented a new method for estimating PSDs in latex of homogeneous particles on the basis of multiangle dynamic light scattering (MDLS), from which improved estimates can be obtained when compared to classical estimation methods. In the case of latex with core-shell particles, a novel estimation method is proposed for acceptable estimating the bivariate size distribution (i.e., core and particle size distribution) on the basis of light scattering measurements. Also, two alternative methods for estimating PSDs of latex with unknown composition based on elastic light scattering and MDLS are evaluated. Finally, an analysis of the capillary hidrodynamic fractionation (CHDF) technique with turbidity detection is carry out. A study on the uncertainties of: i) the calibration curve: particle diameter vs elution time; and ii) the refractive index of the particles, is performed. Aditionally, a method to quantify and correct the instrumental broadening in CHDF is proposed, that is able to improve the obtained estimates.Palabras clave – provistas por el repositorio digital
Light cattering techniques; Inverse problems; Látex poliméricos; Distribución de tamaños de partículas; Técnicas de dispersión de luz; Fraccionamiento hidrodinamico capilar; Problemas inversos
Disponibilidad
| Institución detectada | Año de publicación | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No requiere | 2012 | Biblioteca Virtual de la Universidad Nacional del Litoral (SNRD) |
|
Información
Tipo de recurso:
tesis
Idiomas de la publicación
- español castellano
País de edición
Argentina
Fecha de publicación
2012-03-01