Sensory Polymeric Foams as a Tool for Improving Sensing Performance of Sensory Polymers
| Autor: | Blanca S. Pascual, Félix Clemente García García, José M. García, Cipriano Ramos, María Teresa Sanz, Jose Antonio Reglero Ruiz, Saúl Vallejos |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
sensory films Chemistry Organic Nanotechnology Sensory system 02 engineering and technology lcsh:Chemical technology 01 natural sciences Biochemistry Article Analytical Chemistry microcellular polymer ScCO2 foaming lcsh:TP1-1185 Electrical and Electronic Engineering Instrumentation chemistry.chemical_classification 010401 analytical chemistry Química orgánica Polymer 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences chemistry mercury detection 0210 nano-technology |
| Zdroj: | Sensors, Vol 18, Iss 12, p 4378 (2018) Sensors Volume 18 Issue 12 Repositorio Institucional de la Universidad de Burgos (RIUBU) instname Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| Popis: | Microcellular sensory polymers prepared from solid sensory polymeric films were tested in an aqueous Hg(II) detection process to analyze their sensory behavior. First, solid acrylic-based polymeric films of 100 µ m thickness were obtained via radical copolymerization process. Secondly, dithizone sensoring motifs were anchored in a simple five-step route, obtaining handleable colorimetric sensory films. To create the microporous structure, films were foamed in a ScCO2 batch process, carried out at 350 bar and 60 ° C, resulting in homogeneous morphologies with cell sizes around 5 µ m. The comparative behavior of the solid and foamed sensory films was tested in the detection of mercury in pure water media at 2.2 pH, resulting in a reduction of the response time (RT) around 25% and limits of detection and quantification (LOD and LOQ) four times lower when using foamed films, due to the increase of the specific surface associated to the microcellular structure. |
| Databáze: | OpenAIRE |
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