Polyaniline-coated coconut fibers: Structure,properties and their use as conductive additives in matrix of polyurethane derived from castor oil |
| |
| Institution: | 1. Polymer and Composites Laboratory, Mechanical Engineering Department, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil;2. Department of Industrial Engineering, University of Trento, 38123 Trento, Italy;1. Centre for Atmospheric Science, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK;2. The Nanoscience Centre, Department of Engineering, University of Cambridge, 11 JJ Thomson Avenue, Cambridge CB3 0FF, UK;1. School of Chemistry and Chemical Engineering, Huangshan University, Huangshan 245041, China;2. State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China;1. Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA;2. Department of Chemistry, University of Utah, Salt Lake City, UT 84112-0850, USA;1. Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700 032, India;2. Departamento de Química Inorgánica, c/ Francisco Tomás y Valiente, 7, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain |
| |
| Abstract: | Electrically conducting fibers based on coconut fibers (CF) and polyaniline (PANI) were prepared through in situ oxidative polymerization of aniline (ANI) in the presence of CF using iron (III) chloride hexahydrate (FeCl3.6H2O) or ammonium persulfate (APS) as an oxidant. The PANI-coated coconut fibers (CF-PANI) displayed various morphologies, electrical conductivities and percentages of PANI on the CF surface. For both systems, a PANI conductive layer was present on the CF surface, which was responsible for an electrical conductivity of around 1.5 × 10?1 and 1.9 × 10?2 S cm?1 for composites prepared with FeCl3.6H2O and APS, respectively; values that are similar to that of pure PANI. In order to modify the structure and properties of polyurethane derived from castor oil (PU) both CF-PANI and pure PANI were used as conductive additives. The PU/CF-PANI composites exhibited higher electrical conductivity than pure PU and PU/PANI blends. Additionally, the PU/CF-PANI composites showed a variation in electrical resistivity according to the compressive stress applied, indicating that these materials could be applied for pressure-sensitive applications. |
| |
| Keywords: | Intrinsically conducting polymer Polyaniline Coconut fibers Polyurethane |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
