Formation mechanism of polyaniline self-assembled needles and urchin-like structures assisted by magnesium oxide
| Autor: | Michael Ibrahim, Tony Khoury, Maria Bassil, Philippe Miele, Umit B. Demirci, Mario El Tahchi |
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| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Magnesium Scanning electron microscope Organic Chemistry chemistry.chemical_element 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Aniline chemistry Polymerization Optical microscope law Polyaniline Polymer chemistry Materials Chemistry Fourier transform infrared spectroscopy 0210 nano-technology |
| Zdroj: | Polymer International. 64:505-512 |
| ISSN: | 0959-8103 |
| DOI: | 10.1002/pi.4818 |
| Popis: | The polyaniline (PANI) morphological structure is strongly correlated with the preparation procedure, yielding diverse geometries such as nano-tubes, belts, rods, fibres and particles. In this study, the synthesis of a novel PANI morphology of consisting of hollow needles and urchin-like structures is presented and its formation mechanism is explained. The polymer was synthesized by chemical oxidative polymerization of aniline in the presence of magnesium oxide as a structural directing agent. The morphological study of the urchin-like PANI was conducted using scanning electron microscopy and in situ monitoring of needle growth was done using optical microscopy. The structure and functional groups of these novel structures were characterized using Fourier transform infrared spectroscopy. Additionally, the formation mechanism is modelled based on the multi-layer theory where a core–shell structure exists between the polymer (shell) and the magnesium oxide particles (core). © 2014 Society of Chemical Industry |
| Databáze: | OpenAIRE |
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