Photoacoustic monitoring of thermal wave interference effects during the formation of polymeric thin films from solutions
作者： P. Martínez-Torres , J. J. Alvarado-Gil
DOI: 10.1007/S00339-011-6524-8
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摘要: In this work, the potential of photoacoustic (PA) technique in analysis formation polymer films by evaporation from aqueous solutions is explored. Experiments are performed using different volume fractions two polymers, PEDT:PSS and a white liquid glue. The sample deposited on metallic substrate attached to modified PA cell that allows monitoring process development polymeric film. It shown when thickness order thermal diffusion length, maxima minima signal, due wave interference effects, observed. last stage process, signal reaches stable value which depends formed kinetics film formation, dependence rate solvent as well final discussed. These results can be useful establishing methodology for photothermal characterization solutions.
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