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Particle Systems Characterization Using a Flat Cell Static Light Scattering Apparatus
Author(s) -
Eliçabe Guillermo E.,
Schroeder Walter F.,
Frontini Gloria L.,
Pettarin Valeria
Publication year - 2007
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.200600995
Subject(s) - materials science , polystyrene , light scattering , multiangle light scattering , dynamic light scattering , particle (ecology) , scattering , optics , static light scattering , characterization (materials science) , particle size , integrating sphere , polymer , laser , polymerization , analytical chemistry (journal) , composite material , nanotechnology , chemical engineering , chemistry , chromatography , nanoparticle , physics , oceanography , engineering , geology
In this work a light scattering apparatus for the study of heterogeneous liquid systems of evolving morphology is presented. A Fraunhofer configuration consisting of a linear array of photodiodes is used to detect the light scattered by thin samples illuminated by a He‐Ne laser light. Temperature control is available. The instrument is tested with the polymerization induced phase separation of a thermosetting polymer formulated with a divinylester resin copolymerized with styrene and modified with poly(methylmethacrylate). The system is successfully modeled as an arrangement of particles growing in size and number, and varying in composition. The ability of the experimental setup to provide results that can be quantitatively analyzed is checked using microspherical polystyrene standards. Different samples with nominal sizes of 0.5, 1 and 2 μm are used in different combinations of sample thickness and concentration. The analysis of the light scattering spectra is performed using inverse techniques to estimate the particle size distribution of the microspheres. The results agree with previous knowledge of the parameters of the samples.