Synthesis, characterization, and thermal properties of piezoelectric polyimides
| Autor: | José Luis Vilas, Matilde Rodriguez, Luis Manuel León, B. Gonzalo, Tomasz Breczewski, M. A. Perez-Jubindo, M. R. de la Fuente |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Polymers and Plastics Organic Chemistry Piezoelectricity Amorphous solid Thermogravimetry Benzonitrile chemistry.chemical_compound Differential scanning calorimetry chemistry Polymer chemistry Materials Chemistry Physical chemistry Thermal stability Fourier transform infrared spectroscopy Polyimide |
| Zdroj: | Journal of Polymer Science Part A: Polymer Chemistry. 47:722-730 |
| ISSN: | 0887-624X |
| DOI: | 10.1002/pola.23183 |
| Popis: | Three amorphous piezoelectric polyimides have been synthesized and characterized to analyze their utility for high-temperature applications. The studied polyimides have been prepared from 4,4'-oxydiphthalic anhydride and the diamines 2,4-di(3-aminophenoxy)benzonitrile (poly2-4), 2,6-bis(3-aminophenoxy)benzonitrile (poly2-6), and 1,3-bis-2-cyano-3-(3-aminophenoxy)phenoxybenzene (poly2CN). These polyimides differ in the position of the dipolar groups -CN in the aromatic ring (poly2-4 and poly2-6) and in the number of these groups in the repetitive unit (poly2-6 and poly2CN). The imidization degree has been studied by Fourier transform infrared (FTIR) and thermogravimetry-mass spectrometry (TG-MS) and thermal properties by differential scanning calorimetry (DSC) and thermogravimetry (TG). The piezoelectric behavior has been analyzed from remnant polarization measurements. |
| Databáze: | OpenAIRE |
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