Synthesis and Characterization of Aromatic Polyimide Containing 3,6-Diamino-9-Alkylcarbazole and Aromatic Tetracarboxylic Dianhydrides
| Autor: | Miki Murata, Taizoh Yamamoto, Yuzuru Masuda, Shinji Watanabe |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
chemistry.chemical_classification
Argon Materials science Polymers and Plastics Organic Chemistry chemistry.chemical_element 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Characterization (materials science) chemistry Polymer chemistry Materials Chemistry Organic chemistry 0210 nano-technology Glass transition Polyimide Alkyl |
| Zdroj: | High Performance Polymers. 13:281-286 |
| ISSN: | 1361-6412 0954-0083 |
| DOI: | 10.1088/0954-0083/13/4/306 |
| Popis: | New soluble polyimides with inherent viscosities of 0.25–0.62 dl g−1 were synthesized from 3,6-diamino-9-alkylcarbazole and various aromatic tetracarboxylic dianhydrides by the conventional two-step method, including ring-opening polyaddition and subsequent thermally cyclodehydration. Most of the polyimides having hexyl alkyl chains were soluble in N-methylpyrrolidinone and m-cresol, while the polymers having ethyl chains were not soluble in organic solvents. The glass transition temperatures and 10% weight loss temperatures under argon of the polyimides having hexyl chains were in the ranges 232–269 °C and 485–518 °C, respectively. |
| Databáze: | OpenAIRE |
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