Conductometric uric acid and urea biosensor prepared from electroconductive polyaniline–poly(n-butyl methacrylate) composites
| Autor: | J. C. Encinas, D. E. Rodríguez, M. Plascencia, F.A. Méndez-Velarde, M.M. Castillo-Ortega, Roberto Olayo |
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| Rok vydání: | 2002 |
| Předmět: |
Urease
biology Chemistry Composite number Metals and Alloys Ether Conductivity Condensed Matter Physics Dispersant Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Polymer chemistry Polyaniline Materials Chemistry biology.protein Urea Electrical and Electronic Engineering Composite material Instrumentation Biosensor |
| Zdroj: | Sensors and Actuators B: Chemical. 85:19-25 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/s0925-4005(02)00045-x |
| Popis: | Polyaniline–poly( n -butyl methacrylate) (PAn–PBMA) composite films were obtained by casting. The homogeneous films were prepared with poly(vinyl methyl ether) (PVME) and poly(vinyl ethyl ether) (PVEE) as dispersants, and the electric conductivity, mechanical properties and morphology were studied. The PAn integration to the composite is better when PVEE is used as dispersant, but the conductivity is higher when PVME is used. The composites with PVME were tested as chemical sensors for H 2 O 2 and NH 3 , showing good performance. These samples were also tested as biosensor for urea and uric acid using urease and uricase enzymes, respectively. The best results were as chemical sensor for H 2 O 2 , NH 3 , and as biosensors for serum urea determination. |
| Databáze: | OpenAIRE |
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