Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001 Burgos, Spain.
Departamento de Biotecnología y Ciencia de los Alimentos, Área de Ingeniería Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001 Burgos, Spain.
Sensors (Basel). 2018 Dec 11;18(12):4378. doi: 10.3390/s18124378.
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.
从固态感应聚合物膜制备的微细胞感应聚合物被用于分析其感应性能的水合汞（II）检测过程中。首先，通过自由基共聚过程获得 100µm 厚的固态丙烯酸基聚合物膜。其次，通过简单的五步路线将二硫腙感应基固定在聚合物膜上，得到易于处理的比色感应膜。为了形成微孔结构，将膜在 ScCO₂分批过程中进行发泡，在 350 巴和 60°C 的条件下进行，得到具有约 5µm 大小的均匀形态的泡孔。在 2.2 pH 的纯水中检测汞时，比较了固态和发泡感应膜的性能，由于与微细胞结构相关的比表面积增加，发泡膜的响应时间（RT）降低了约 25%，检测限和定量限（LOD 和 LOQ）也降低了四倍。
