2026-05-01T12:10:38Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/50432021-11-10T09:38:20Zcom_10259_4313com_10259_5086com_10259_2604com_10259_4244col_10259_4314col_10259_4245

Sensory polymeric foams as a tool for improving sensing performance of sensory polymers Pascual Portal, Blanca Sol Vallejos Calzada, Saúl Ramos Rodríguez, Cipriano Sanz Díez, Mª Teresa Reglero Ruiz, José A. García García, Félix Clemente García Pérez, José Miguel sensory films microcellular polymer ScCO2 foaming mercury detection Química orgánica Chemistry, Organic 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 µm 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 µm. 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. Fondo Europeo de Desarrollo Regional) and both the Spanish Agencia Estatal de Investigación (MAT2017-84501-R) and the Consejeria de Educación-Junta de Castilla y León (BU306P18) 2018-12-11T10:27:18Z 2018-12-11T10:27:18Z 2018-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1424-8220 http://hdl.handle.net/10259/5043 10.3390/s18124378 eng Sensors, 2018, V. 18, n. 12, 4378 https://doi.org/10.3390/s18124378 info:eu-repo/grantAgreement/MICINN/MAT2017-84501-R info:eu-repo/grantAgreement/JCyL/BU306P18 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess application/pdf MDPI