M Joulazadeh - Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran.
A.H Navarchian - Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran.

Humidity sensing is of great importance in industrial processes and in the storage of moisture-sensitive products [1]. Likewise, the demand for low-cost, low-power, and portable volatile organiccompound detection is increasing dramatically due to the need for environment monitoring, agriculture, and medical applications[2]. There has been a considerable interest in application of organic substances such as conducting polymers (CPs) in gassensing applications. One of the CPs that has gained widely attraction is polyaniline (PANI) owing to its high environmentalstability, ease of synthesis, and tunable conductivity switching between insulating and semiconducting materials [3]. In this study, sensors based on PANI were prepared and the humidity and acetone detection ability of the sensors was investigated