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Artículo

Determination of Size Distributions of Concentrated Polymer Particles Embedded in a Solid Polymer Matrix

Soulé, Ezequiel RodolfoIcon ; Elicabe, Guillermo EnriqueIcon
Fecha de publicación: 04/2008
Editorial: Wiley VCH Verlag
Revista: Particle & Particle Systems Characterization
ISSN: 0934-0866
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería Química

Resumen

In this work we present the results obtained from the size characterization of polymer particles embedded in a solid polymer matrix using Static Light Scattering (SLS) and Scanning Electron Microscopy (SEM). The analyzed samples are the result of the solution polymerization of isobornyl methacrylate (IBoMA) in polyisobutylene (PIB) at complete conversion. Induced by polymerization, the system undergoes phase separation. As a result, spherical micron sized particles rich in PIB are formed. At the end of the polymerization, the particles become trapped in a solid polymer matrix rich in Poly‐IBoMA. Size, concentration, and refractive index, make the resulting particle system scatter light under the Rayleigh‐Debye‐Gans (RDG) regime with interparticle interference. For Light Scattering (LS) characterization the samples are measured with a Flat Cell Static Light Scattering (FCSLS) apparatus, in which the reaction takes place. The resulting SLS spectra are analyzed using the Percus‐Yevick approximation to model the interference effects. The local monodisperse approximation is used to consider polydispersity in the particle sizes. The estimated particle size distributions agree well with the measurements from SEM. In this work a concentrated particle system that naturally scatters light according to the RDG regime has been fully characterized in terms of its particle size distribution. This work, against the opinion of other authors, shows the feasibility of measuring still particles using a one dimensional array of light detectors.
Palabras clave: Light Scattering , Particle Characterizarion , Inverse Problem
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/66224
URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/ppsc.200700003
DOI: https://doi.org/10.1002/ppsc.200700003
Colecciones
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Soulé, Ezequiel Rodolfo; Elicabe, Guillermo Enrique; Determination of Size Distributions of Concentrated Polymer Particles Embedded in a Solid Polymer Matrix; Wiley VCH Verlag; Particle & Particle Systems Characterization; 25; 1; 4-2008; 84-91
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