Problems Related to Application of Polymer-Based Composites in Gas Sensors

Analyte Sensing material Detect limit Sensor type [Pg.191]

Methane halide Poly(3-methylthiophene)/ MWNT Several ppm Chemiresistor [Pg.191]

2 Problems Related to Application of Polymer-Based Composites in Gas Sensors [Pg.191]

Research has shown that the surface functionalization of carbon-based fillers, which can both maximize interfacial adhesion between carbon-based fillers and the polymer matrix and increase the dispersion of CB, CNTs, and graphene in polymer matrix, is one of the best approaches to achieve good dispersion of conducting particles in polymer matrix. At present there are several approaches for functionalization of carbon-based materials including defect functionalization, covalent functionalization, and non-covalent functionalization (Gong et al. 2000 Hirsch 2002). Some functional groups, which can improve the interaction between carbon-based fillers and polymer matrix, are covalently bonded directly to the surface of carbon. These functionalization methods will be discussed in Chap. 25 (Vol. 2). [Pg.192]

Abraham JK, Philip B, Witchurch A, Varadan VK, Channa RC (2004) A compact wireless gas sensor using a carbon nanotube/PMMA thin film chemiresistor. Smart Mater Struct 13(5) 1045-1049 [Pg.193]