Towards solution-processable, thermally robust, transparent polyimide-chain-end tethered organosilicate nanohybrids
| Autor: | Dong-Hoon Lee, Nam Ho You, Jaesang Yu, Munju Goh, Jeong un Jin, Bon-Cheol Ku, Haksoo Han, Ki Ho Nam |
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| Rok vydání: | 2019 |
| Předmět: |
Fabrication
Materials science Trifluoromethyl Condensation polymer Mechanical Engineering Substrate (chemistry) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering Silsesquioxane 0104 chemical sciences chemistry.chemical_compound chemistry Mechanics of Materials Polymer chemistry Ceramics and Composites Nucleophilic substitution Amine gas treating Composite material 0210 nano-technology Polyimide |
| Zdroj: | Composites Part B: Engineering. 163:290-296 |
| ISSN: | 1359-8368 |
| DOI: | 10.1016/j.compositesb.2018.11.029 |
| Popis: | The main challenge to developing future display substrates is to synthesize flexible substrate materials that also have excellent optical and thermal properties, and low thermal expansion number. In this study, a novel trifluoromethylated asymmetric aromatic diamine, 4-[[4-(4-amino-2-trifluoromethylphenoxy)phenyl]sulfonyl-3-(trifluoromethyl)]benzenamine (AFPSFB), was synthesized through nucleophilic substitution. Conventional two-step polycondensation of AFPSFB with commercially available tetracarboxylic dianhydrides enabled the fabrication of fully or semi-aromatic polyimides (PIs). The resulting PIs were highly soluble in polar aprotic solvents with good optical and thermal properties. Next, polyhedral oligomeric silsesquioxane containing an amine group (NH2-POSS) was reacted with the resulting soluble PI. All the PI-POSS nanohybrids displayed excellent optical properties, including high transparency (>91% at 400 nm), low refractive index ( |
| Databáze: | OpenAIRE |
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