| 초록 |
Carbon black is widely used as a conductive material due to its superior electrical conductivity, heat resistance, and low cost. In this study, a conductive paste was prepared from carbon black, and printed on a flexible polyethylene terephthalate (PET) substrate for humidity sensing electrodes. Then the obtained electrodes were coated with a humidity sensing solution to create a wearable humidity sensor. For the humidity sensing solution, polymer composites were formulated by mixing polyvinyl alcohol (PVA), a water-soluble polymer, and polydiallyldimethylammonium chloride (PDDA), a polyelectrolytic polymer. Resistance change of the wearable sensor created was measured using thermo-hygrostat with varying relative humidity at predetermined temperatures. |
