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Development of gas sensor from conducting polymer composite containing poly (3,4-ethylenedioxythiophene) |
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| รหัสดีโอไอ | |
| Title | Development of gas sensor from conducting polymer composite containing poly (3,4-ethylenedioxythiophene) |
| Creator | Laongdao Menbangpung |
| Contributor | Voravee P. Hoven, Yongsak Sritana-anant |
| Publisher | Chulalongkorn University |
| Publication Year | 2552 |
| Keyword | Polymerization, Conducting polymers, Gas detectors, โพลิเมอไรเซชัน, โพลิเมอร์นำไฟฟ้า, อุปกรณ์ตรวจจับก๊าซ |
| Abstract | This research aims to study film processing of the conducting polymer composites containing poly(3,4-ethylenedioxythiophene) (PEDOT) using solid state polymerization of 2,5-dibromo-3,4-ethylenedioxythiophene (DBEDOT) in the polymer matrix on the interdigitated electrode (IDE) for gas sensing applications. The most appropriate condition for preparing DBEDOT-containing composite film was to spin casting the mixed solution of polybutadiene (PB) and DBEDOT dissolved in toluene at 1:10 (w/w) of PB:DBEDOT on IDE with a spin speed of 1500 rpm for 60 sec, and induced SSP of DBEDOT to conductive PEDOT by heating the PB/DBEDOT composite film at 60 oC for 8 h. The PB/PEDOT composite film having a resistance of 103 ohm was chosen for testing against a number of volatile chemicals. The resistivity of the PB/PEDOT composite film was systematically changed with the polarity of the chemical. The PEDOT-based sensor gave good responses to polar solvents such as methanol, ethanol, and water. The repeatability and sensitivity of the developed sensor were also determined. |
| URL Website | cuir.car.chula.ac.th |
