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

作者：Castillo Ortega M M^*; Del Castillo Castro T; Ibarra Bracamontes V J; Nuno Donlucas S M; Puig J E; Herrera Franco P J

来源：Sensors and Actuators B: Chemical , 2007, 125(2): 538-543.

DOI：10.1016/j.sub.2007.02.049

• polyaniline
• composites
• urea sensing film
• extrusion

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 NH3 and 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.

• 出版日期2007-8-8