Thermal stability of polyaniline |
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| Affiliation: | 1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China;2. State Key Laboratory of Electrical Insulation and Power Equipment, Xi''an Jiaotong University, Xi''an, 710049, PR China;3. State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, PR China;1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;2. Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Republic of Korea;3. Department of Chemistry, Inha University, Incheon 402-751, Republic of Korea;1. Graphene Research Institute, Sejong University, Seoul 143-747, South Korea;2. Institute of Nano and Advanced Materials Engineering, Sejong University, Seoul 143-747, South Korea;3. Thin Film Materials Research Group, Korea Research Institute of Chemical Technology, Daejon 305-600, South Korea;4. School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea;1. Beijing National Laboratory of Molecular Science, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China;2. University of Chinese Academy of Sciences, Beijing, 100049, PR China;3. College of Chemistry and Chemical Engineering, Binzhou University, Binzhou, 256600, Shandong, PR China;1. Department of Ecology, Biogeochemistry and Environmental Protection, University of Wroc?aw, ul. Kanonia 6/8, 50-328 Wroc?aw, Poland;2. Department of Mineralogy and Petrology, Institute of Geological Sciences, University of Wroc?aw, Cybulskiego 30, 50-205 Wroclaw, Poland;3. Department of Neutron Activation Analysis and Applied Research, Division of Nuclear Physics, Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Str. Joliot-Curie, 6, Dubna 141980, Moscow Region, Russian Federation;4. Radboud University Nijmegen, Institute for Water and Wetland Research, Department of Environmental Science, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands;1. Department of Electrical Engineering, College of Engineering, Mazandaran University of Science and Technology, Babol, Iran;2. Department of Basic Science, College of Science, Mazandaran University of Science and Technology, Babol, Iran |
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| Abstract: | The thermal stability of conductive polyaniline prepared by the chemical oxidation of aniline with ammonium persulfate in hydrochloric acid was investigated by a heat-aging test at 150 °C. The stability in terms of electrical conductivity was found to depend upon the sample form as well as on the environment. The extent of deterioration in electrical conductivity decreased in the order of the powder in air, the disk in air and the powder in vacuo. From the elemental analysis, infrared and Raman spectroscopies, X-ray photoelectron spectroscopy and electron probe micro-analysis, the deterioration in the presence of air was assumed to be based on the chemical change involving the elimination of hydrochloric acid on the amino group and the simultaneous chlorination of the aromatic ring. |
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