caa a22 4500 378903683 CHVBK 20180305123524.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.1515/epoly.2004.4.1.314 doi (NATIONALLICENCE)gruyter-10.1515/epoly.2004.4.1.314 Electrorheology of conducting polyaniline composite particles [Elektronische Daten] [Hyoung Jin Choi, Min Sung Cho, Young Hoon Lee, Yun Hyang Cho, Myung S. Jhon] Three different kinds of particles of semiconductive polyaniline (PANI), spherical poly(methyl methacrylate) with a PANI shell (PAPMMA), and conductive PANI encapsulated by insulating melamine-formaldehyde resin (MCPA) were synthesized and adopted as a dispersed phase for electrorheological (ER) fluids. ER fluids are suspensions of polarizable particles dispersed in non-conducting liquids. The rheological characteristics of ER fluids rapidly change in the presence of an applied electric field, which can be controlled by both the applied electric field strength and particle concentration with a fast response time on the order of milliseconds. MCPA-based ER fluids show the largest stress enhancement by an applied electric field compared with both PANI- and PAPMMA-based ER fluids, demonstrating that the conductive core with an insulating shell system is a better ER material than homogeneous, semiconductive materials or surface-semiconductive materials with insulating cores. © 2013 by Walter de Gruyter GmbH & Co. Choi Hyoung Jin Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 aut Cho Min Sung Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 aut Lee Young Hoon Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 aut Cho Yun Hyang Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 aut Jhon Myung S. Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213-3890, USA aut e-Polymers De Gruyter 4/1(2004-12-01), 314-323 2197-4586 4:1<314 2004 4 epoly https://doi.org/10.1515/epoly.2004.4.1.314 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/epoly.2004.4.1.314 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Choi Hyoung Jin Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 aut NATIONALLICENCE 700 1- Cho Min Sung Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 aut NATIONALLICENCE 700 1- Lee Young Hoon Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 aut NATIONALLICENCE 700 1- Cho Yun Hyang Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 aut NATIONALLICENCE 700 1- Jhon Myung S. Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213-3890, USA aut NATIONALLICENCE 773 0- e-Polymers De Gruyter 4/1(2004-12-01), 314-323 2197-4586 4:1<314 2004 4 epoly CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter