Polymethylmethacrylate and stearic acid compatibility in monolayers |
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| Authors: | M Puggelli G Gabrielli |
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| Institution: | (1) Present address: Department of Chemistry, University of Florence, Firenze, Italy |
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| Abstract: | Mixed monolayers of polymethylmethacrylate (PMMA) and stearic acid (SA) on substrates with different pH are examined at 25 °C.The spreading isotherms of the pure components and their mixtures in different molar ratios indicate a critical pH value of the support, above which the components are miscible.This limiting pH value, which is confirmed also by surface potential measurements, allows a sufficient ionization of the carboxilic acid.This study was supported by CNR and MPI. |
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| Keywords: | Binary system comptibility inmonolayers ionizablemonolayers degree ofdissociation |
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