Influence of reaction media on pressure sensitivity of polyanilines doped with DBSA

• Published in: Journal of applied polymer science Vol. 107; no. 4; pp. 2404 - 2413
• Main Authors: de Souza, Fernando Gomes Jr, Anzai, Thiago Koichi, Melo, Príamo Albuquerque Jr, Soares, Bluma G, Nele, Márcio, Pinto, José Carlos
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.02.2008; Wiley
• Subjects: Applied sciences; compression sensitivity; DBSA; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; polyaniline; polymerization; Polymers with particular properties; Preparation, kinetics, thermodynamics, mechanism and catalysts; pressure sensors; reaction media; Solvent effect; polymerization; Electrical conductivity; Electrical properties; reaction media; pressure sensors; Chemical sensor; Experimental study; Property processing relationship; Pressure sensor; Empirical model; Modeling; Sulfonic acid; compression sensitivity; Conducting polymers; Pressure effect; DBSA; Experimental design; Preparation; Doped polymer; Oxidative polymerization; polyaniline; Aniline polymer
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.27290

The effect of the reaction medium on the final electrical performance of Pani doped with dodecylbenzene sulfonic acid (DBSA), Pani.DBSA, is analyzed in this manuscript. Pani.DBSA was synthesized through the one-step route in nonaromatic media, in accordance with a mixture experimental design. Polymer samples were analyzed by UV-vis and WAXS to characterize the differences among the many prepared Pani.DBSA samples and to explain the observed conductivity and compression sensitivity characteristics. Obtained results were modeled in accordance with a standard empirical modeling approach. Based on the obtained experimental data and on the proposed empirical models, it is shown that addition of acetone and isopropanol into the aqueous media during the one-step synthesis of Pani.DBSA materials must be encouraged. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008