What is it about?
In this paper a selection of PA methods for characterization of polymers is presented. The UV-VIS Photoacoustic Spectroscopy (PAS) and Phase Resolved PAS, the Two-Beam Phase-Lag and also the so-called Open Photoacoustic Cell (OPC) will be described The theoretical basis and experimental results together with the perspectives of future studies in this area will also be discussed.
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Why is it important?
In the polymer area, there are several kinds of non homogeneous samples that present high level of scattering light and also samples that are opaque in a considerable part of the spectrum. Due to that, photothermal method is recognized to be an important experimental procedure to access the thermo-optical properties of polymeric materials.
Perspectives
PAS have been shown to be a very useful optical technique for studying optical and thermal properties of polymers.
Professor Daniele T Dias
Federal University of Technology - Paraná
Read the Original
This page is a summary of: On the application of the photoacoustic methods for the determination of thermo-optical properties of polymers, Brazilian Journal of Physics, June 2002, FapUNIFESP (SciELO),
DOI: 10.1590/s0103-97332002000300006.
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