Research Article
Organic Membranes for Selectivity Enhancement of Metal Oxide Gas Sensors
Figure 5
(a) Separation properties of LDPE, HDPE, and PE + graphite upon exposure to 150 ppm H2, 30 ppm CO, 1,000 ppm CH4, 500 ppm ethanol, 500 ppm acetone, and 25 ppm acetaldehyde. The diameter of the membranes is 6.4 mm. (b) structure of the PE monomer and cross-linking of the macromolecules in HDPE and LDPE.
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