Morphology evolution of polyaniline microstructures via reverse micelles and their hydrophobicity
| Autor: | Binni Varghese, Minrui Zheng, Hardy S. O. Chan, Jia-Hua Shi, Chorng Haur Sow, Tao Wen |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Morphology (linguistics) Macromolecular Substances Surface Properties Biomedical Engineering Molecular Conformation Bioengineering Micelle chemistry.chemical_compound Polyaniline Polymer chemistry Materials Testing General Materials Science Fourier transform infrared spectroscopy Particle Size Nanoscopic scale Micelles Aniline Compounds General Chemistry Condensed Matter Physics Microstructure Toluene Nanostructures Monomer chemistry Chemical engineering Crystallization Hydrophobic and Hydrophilic Interactions |
| Zdroj: | Journal of nanoscience and nanotechnology. 12(1) |
| ISSN: | 1533-4880 |
| Popis: | Polyaniline morphology evolution in toluene has been observed for the first time. Various structures, including one-dimensional open-ended microtubes, three-dimensional solid microspheres and two-dimensional novel solid microplates were controllably synthesized in the same reaction system. The structures obtained were sensitive to oxidant concentration and molar ratio of monomer to oxidant. Solid microplates were mainly formed on the glass beaker wall and bottom, while tubes and spheres were produced in solution by employing reverse micelles as soft templates. Studies on the effect of reaction temperature, mechanical stirring and the addition of more acid were also carried out. FTIR and UV-Vis results showed that the PANI products were in the emeraldine form. The PANI film prepared from spheres exhibited hydrophobic property due to its rough surface covered with nanoscale dots and the large distribution of sphere diameters. |
| Databáze: | OpenAIRE |
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