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Keywords = higher permeability of toxic agents in air

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15 pages, 5775 KB  
Communication
Innovative Supported Membranes for Ion Mobility Spectrometer (IMS) Sample Introduction Systems with High Permeability Relative to Toxic Agents in Air (TAAs)
by Monika Wiśnik-Sawka, Wojciech Fabianowski and Dorota Gajda
Materials 2025, 18(2), 281; https://doi.org/10.3390/ma18020281 - 10 Jan 2025
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Abstract
One of the main objectives of the ion mobility spectrometry (IMS) technique is to reduce moisture in detection systems, which causes the formation of ion clusters and ion water and a reduction in formed clusters’ activity. Thus, one of the methods limiting moisture [...] Read more.
One of the main objectives of the ion mobility spectrometry (IMS) technique is to reduce moisture in detection systems, which causes the formation of ion clusters and ion water and a reduction in formed clusters’ activity. Thus, one of the methods limiting moisture in a sampling injection system is to use hydrophobic polymeric membranes. The use of membranes with high permeability relative to the analysed organic compounds is required, including toxic agents in air (TAAs). Such requirements align with those of polydimethylsiloxane (PDMS) membranes. Unfortunately, thin PDMS membranes are not mechanically resistant. In this study, relatively thin PDMS membranes were reinforced with fine mesh fabric supports. These supports were chemically modified with selected oligoglycol derivatives and finally coated with PDMS. The obtained membranes were tested for water permeability and TAA simulants. Full article
(This article belongs to the Section Polymeric Materials)
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