Urea sensing film prepared by extrusion from DBSA-doped polyaniline-poly(styrene-co-potassium acrylate) in a poly(n-butyl methacrylate) matrix

M. M. Castillo-Ortega, T. Del Castillo-Castro, V. J. Ibarra-Bracamontes, S. M. Nuño-Donlucas, J. E. Puig, P. J. Herrera-Franco

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Abstract

Films of n-dodecylbenzene sulfonic acid-doped polyaniline (PANIDBSA), poly(styrene-co-potassium acrylate) (PSAK) and poly(n-butyl methacrylate) (PBMA) were prepared by extrusion at different weight ratios. The electrical, mechanical and morphological properties of the films were studied and compared with those of films of PANIDBSA-PBMA in which the ionomer (PSAK) was not included. The PSAK incorporation improves the electrical properties, the tensile strength and the homogeneity of the films. The 50% PANIDBSA-PSAK composites showed good sensing capability toward NH3and urea aqueous solutions. The urea sensitivity of the films was also evaluated in serum samples. The results show a good agreement with those of the standard method implemented in clinical laboratories. © 2007 Elsevier B.V. All rights reserved.
Original languageAmerican English
Pages (from-to)538-543
Number of pages6
JournalSensors and Actuators, B: Chemical
DOIs
StatePublished - 8 Aug 2007

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