Abstract

The dissolution characteristics of thin polymethyl methacrylate films, studied by simultaneous laser interferometry and fluorescence quenching (LIFQ) experiments, are reported. These require UV-transparent substrates. The influence of the substrate material on the LIFQ results was investigated. The results obtained with sapphire substrates allowed us to calculate the thickness of the solvent-swollen gel layer at the beginning and at the end of the dissolution process.

© 1992 Optical Society of America

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