Polyimide/amine-functionalized cellulose nanocrystal nanocomposite films
| Autor: | Chang-Sik Ha, Gue-Hyun Kim, Hyuk-Gi Lee |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Spin coating
Nanocomposite Materials science Young's modulus 02 engineering and technology Dynamic mechanical analysis 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences symbols.namesake chemistry.chemical_compound chemistry Nanocrystal Mechanics of Materials Triethoxysilane Ultimate tensile strength Materials Chemistry symbols General Materials Science Composite material 0210 nano-technology Polyimide |
| Zdroj: | Materials Today Communications. 13:275-281 |
| ISSN: | 2352-4928 |
| DOI: | 10.1016/j.mtcomm.2017.10.010 |
| Popis: | In this study, modified cellulose nanocrystals (AF-CNCs) with (3-aminopropyl) triethoxysilane (APTES) were used to prepare poly (amic acid)/AF-CNC nanocomposite films via spin coating. To convert poly (amic acid) into polyimide (PI), the films were thermally imidized after spin coating. The effects of AF-CNC content on the tensile properties, thermo-mechanical properties, optical transmittance, morphology and barrier properties of PI/AF-CNC nanocomposite films were investigated. With increasing content of AF-CNC from 0 wt% to 3 wt%, tensile modulus and storage modulus of PI/AF-CNC nanocomposite films increase without decrease in their optical transmittance. The water vapor transmission rate and tan δ peak height of PI/AF-CNC nanocomposite films decrease with increasing AF-CNC content from 0 wt% to 3 wt%. For comparison, PI/CNC nanocomposite films with 2 wt% of unmodified CNC were also prepared. PI/AF-CNC (2 wt%) nanocomposite films show better mechanical and physical properties than PI/CNC (2 wt%) nanocomposite films. |
| Databáze: | OpenAIRE |
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