Abstract

The advent of Fourier transform infrared spectroscopy has allowed for the use of the photoacoustic detection technique in the infrared region of the electromagnetic spectra. Urban recently described the advantages of photoacoustic Fourier transform infrared spectroscopy (PAS/FT-IR) in the characterization of polymeric coatings and interfaces at various depths at the molecular level. Nonetheless, because of the strong tendency for PAS/FT-IR spectra to be distorted due to saturation of peaks with strong absorbances, PAS/FT-IR has found only limited use as a quantitative procedure. In this report we describe how, with careful selection of a reference peak, one can use the strong peak saturation characteristic of PAS/FT-IR to advantage in the quantification of small amounts of residual unsaturation in a photo-cured acrylate coating.

Quantitative Fourier transform IR photoacoustic spectroscopy of condensed phases

Y. C. Teng and B. S. H. Royce
Appl. Opt. 21(1) 77-80 (1982)

Recent applications of FT-IR spectroscopy to polymer systems

J. L. Koenig and M. K. Antoon
Appl. Opt. 17(9) 1374-1385 (1978)

Mid-infrared photoacoustic spectroscopy of solids using an external-cavity quantum-cascade laser

Qing Wen and Kirk H. Michaelian
Opt. Lett. 33(16) 1875-1877 (2008)

Broadband cantilever-enhanced photoacoustic spectroscopy in the mid-IR using a supercontinuum

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Opt. Lett. 43(20) 5094-5097 (2018)

Photoacoustic phase-controlled Fourier-transform infrared spectroscopy

Santeri Larnimaa, Mikhail Roiz, and Markku Vainio
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