Improved durability of lignocellulose-polypropylene composites manufactured using twin-screw extrusion
| Autor: | Elisa Koivuranta, Maiju Hietala, Kristiina Oksman, Ari Ämmälä, Mirja Illikainen |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Peat Composite number Biomaterial 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Decomposition Durability 0104 chemical sciences Mechanics of Materials Ceramics and Composites Extrusion Particle size Hardboard Composite material 0210 nano-technology |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 101:265-272 |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2017.06.024 |
| Popis: | The objective of this study was to investigate the use of peat as a potential lignocellulose source in composites manufactured by twin-screw extrusion. The effects of peat decomposition rate and particle size on the mechanical properties and moisture resistance of peat-polypropylene (PP) composites under cyclic conditions were evaluated. The properties of the peat-PP composites were compared to commercial lignocellulosic fibre products, namely wood-plastic composite (WPC), medium density fibreboard (MDF) and hardboard (HB). The results show that prior cyclic freeze-thaw testing peat-PP composites had properties equal to commercial WPC, but their mechanical permanence was better after freeze-thaw conditioning. When moderately decomposed, smaller particle–size peat was used, peat-PP composites had better dimensional stability, though particle size did not affect as much as the decomposition degree. Thus, the chemical structure of peat has a greater influence on composite durability, as better water and weather resistance are achieved with peat that is more decomposed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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