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Nanofiber Based Sensors for Volatile Organic Compounds
Volatile organic compounds (VOCs) are by-products of rapidly growing cells and commonly produced by organic decomposition. Their existence and concentrations are considered as quality indicators for many products as well as biomarkers in metabolic diseases. Furthermore, many volatile compounds are t
Keywords: nanofiber, VOC's, sensor
Electrospinning is a versatile method for the development of micro- to nano scaled fiber membranes from polymer solutions. The high surface to volume ratio of the yielded fibers makes them interesting candidates for surface sensitive applications, especially in the field of gas sensors.
The characteristics of the electrospun fibers are thereby highly dependent on the process parameters including the spinning solution properties, the instrumental setup as well as the environmental condi-tions.
Electrospinning is a versatile method for the development of micro- to nano scaled fiber membranes from polymer solutions. The high surface to volume ratio of the yielded fibers makes them interesting candidates for surface sensitive applications, especially in the field of gas sensors. The characteristics of the electrospun fibers are thereby highly dependent on the process parameters including the spinning solution properties, the instrumental setup as well as the environmental condi-tions.
• Selected polymer solutions are prepared and their properties (conductivity, viscosity and sur-face tension) are analyzed. Active sensor molecules will be added in selected concentration ranges.
• The solutions are used for electrospinning both for mono- and bi-component fibers. The resulting fibers will be investigated using various techniques, e.g. scanning electron microscopy (SEM), Fourier Transform Infrared (FTIR) spectroscopy and Differential Scanning Calorimetry (DSC).
• Activity of the sensor materials will be determined by spectrometry and gas chromatography / mass spectrometry
• Selected polymer solutions are prepared and their properties (conductivity, viscosity and sur-face tension) are analyzed. Active sensor molecules will be added in selected concentration ranges. • The solutions are used for electrospinning both for mono- and bi-component fibers. The resulting fibers will be investigated using various techniques, e.g. scanning electron microscopy (SEM), Fourier Transform Infrared (FTIR) spectroscopy and Differential Scanning Calorimetry (DSC). • Activity of the sensor materials will be determined by spectrometry and gas chromatography / mass spectrometry
Dr. Giuseppino Fortunato:giuseppino.fortunato@empa.ch or
Sebastian Ulrich: sebastian.ulrich@empa.ch
Dr. Giuseppino Fortunato:giuseppino.fortunato@empa.ch or Sebastian Ulrich: sebastian.ulrich@empa.ch