• 作者： Lin, Chi-Wen; Yang, Jen-Yi; Hwang, Bing Joe
• 中文摘要： 本研究首先以電化學法製備聚咇咯與聚環氧乙烯複合薄膜, 並探討其對甲醇感測能力, 包括感度、應答及回復等特性等。此複合材料感測器對甲醇氣體之感測具再現性, 結果發現在0.2C至0.8C之間, 其對甲醇之感測能力與電聚合電量有關, 在較低聚合電量, 可得較好之感測效果, 當甲醇濃度低於27mg/l, 以0.2C製備之PPy-PEO感測器, 可得 3.228OMEGA./mg/l/sup -1/之最佳感度。甲醇濃度愈高, 應答及回復速度變慢。PEO含量影響感度之次序為7.0mg/l >0mg/l(純 PPy)>2.5mg/l, PEO能增加此感測器在大氣中之穩定性。
• 英文摘要： Polypyrrole-poly (ethylene oxide)(PPy-PEO) composite films were prepared electrochemically. Their methanol- sensing abilities including sensitivity, response and recovery actions were investigated. The composite sensors had consistent producibilities as they were exposed to the methanol-nitrogen cycles. It was found that the methanol- sensing abilities were dependent upon the electropolymerization charge, ranging from 0.2 coulombs(C) to 0.8C, and were better as the polymerization charge was decreased. A best sensitivity of 3.228.OMEGA./mgl/sup -1/ was obtained by a PPy-PEO sensor, polymerized at 0.2C, in an methanol concentration lower than 27mg/l. However, higher methanol concentrations resulted in slower action in both response and recovery. The effect of PEO loading on the sensitivity of the sensor exhibited an order of 7.0mg/l>0mg/l (pure PPy) >2.5mg/l. The incorporation of PEO improved the stability of the sensor material in the atmosphere environment.
• 中文關鍵字： 氣體感測器; 聚咇咯; 聚環氧乙烯; 甲醇; 靈敏度; 電解聚合反應
• 英文關鍵字： Gas Sensor; Polypyrrole (Ppy); Polyethylene Oxide (Peo); Methanol; Sensitivity; Electropolymerization