Electron beam induced strengthening of a short carbon fiber reinforced green thermoplastic composite: Key factors determining materials performance
| Autor: | Masaki Nishio, Takayuki Tsukegi, Fujie Tetsuo, Kentaro Taki, Kenji Takahashi, László Szabó, Sari Imanishi, Daisuke Hirose, Kazuaki Ninomiya |
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| Rok vydání: | 2019 |
| Předmět: |
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Materials science Pellets 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Matrix (chemical analysis) Shear (sheet metal) chemistry.chemical_compound chemistry Mechanics of Materials Ultimate tensile strength Ceramics and Composites engineering Biopolymer Irradiation Composite material Cellulose 0210 nano-technology |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 121:386-396 |
| ISSN: | 1359-835X |
| Popis: | Short carbon fiber reinforced thermoplastic composites are promising materials for creating lightweight structures with short processing time and high potential for recyclability. Our study aimed at preparing composites containing a biobased renewable matrix reinforced with short carbon fibers, and tailoring their mechanical properties by means of electron beam irradiation as a chemical-free green process. Electron beam irradiation of the cellulose propionate matrix brought about competing chain-scission and crosslinking events, the outcome of these processes was finely tuned by directly functionalizing the biopolymer with crosslinking agent. As a result, we found that crosslink formation has a negative effect on the mechanical properties and improvement was only achieved when irradiation was performed on pellets of the neat matrix (∼29% increase in tensile strength). Electron beam treatment strengthens individual carbon fibers embedded in the matrix and renders them more resistive to the shear that develops during further processing eventually yielding longer fibers. |
| Databáze: | OpenAIRE |
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