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Proceedings Paper

FTIR-ATR to the study of diffusion of water on polysulfone polymeric membranes
Author(s): Marcia R. Pereira; Jack Yarwood
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Paper Abstract

Most of the techniques used to study diffusion coefficients require sophisticated and often indirect methods for the detection of the analyte diffusing through the membrane that, generally, do not allow us to monitor the diffusion process continuously. In this work we are trying to establish an experimentally simple and straightforward method employing FTIR-ATR spectroscopy to measure liquid sorption kinetics in situ. The transparency of the membrane in study, allied with its ability to absorb substantial amounts of penetrant liquids without dissolving, means that it is possible to observe and measure the sorption process optically. The method is based on monitoring the time-dependent change in absorption due to diffusion of water into the membrane.

Paper Details

Date Published: 31 January 1994
PDF: 2 pages
Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994);
Show Author Affiliations
Marcia R. Pereira, Univ. of Durham (United Kingdom)
Jack Yarwood, Univ. of Durham (United Kingdom)

Published in SPIE Proceedings Vol. 2089:
9th International Conference on Fourier Transform Spectroscopy
John E. Bertie; Hal Wieser, Editor(s)

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