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The Use of Polyurethane Composites with Sensing Polymers as New Coating Materials for Surface Acoustic Wave-Based Chemical Sensors—Part I: Analysis of the Coating Results, Sensing Responses and Adhesion of the Coating Layers of Polyurethane–Polybutylmethacrylate Composites

Rapp, Michael 1; Voigt, Achim 1; Dirschka, Marian 1; Carvalho, Mauro dos Santos de
1 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)

Abstract:

The sensing layers for surface acoustic wave-based (SAW) sensors are the main factor in defining the selectivity and reproducibility of the responses of the sensor systems. Among the materials used as sensing layers for SAW sensors, polymers present a wide range of advantages, from availability to a large choice of chemical-sensing environments. However, depending on the physical–chemical properties of the polymer, issues about the chemical and mechanical stability of the sensing layer have been reported that can compromise the application of sensor systems in the long-term. The sensor properties are defined basically by the properties of the coating material and the quality of the coating process. The strategy used to improve the properties of polymeric coating layers for SAW technology involved the use of polyurethane (PU) in combination with a second polymer that is responsible for the sensing properties of the resulting layer; this is obtained by a reproducible and robust coating procedure. In this first part of our research, we used polymer composites of different compositions of polybutylmetacrylate (PBMA) as the sensing polymer with polyurethane. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000166037
Veröffentlicht am 02.01.2024
Originalveröffentlichung
DOI: 10.3390/coatings13111911
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 2079-6412
KITopen-ID: 1000166037
HGF-Programm 43.35.02 (POF IV, LK 01) Functionality of Soft Matter and Biomolecular Systems
Erschienen in Coatings
Verlag MDPI
Band 13
Heft 11
Seiten 1911
Bemerkung zur Veröffentlichung Programm 47.01.03
Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 08.11.2023
Schlagwörter BBM Bio-Interfaces
Nachgewiesen in Dimensions
Web of Science
Scopus
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