On the application of the photoacoustic methods for the determination of thermo-optical properties of polymers

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.

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