The Effects of Reprocessing and Fiber Treatments on the Properties of Polypropylene-Sugarcane Bagasse Biocomposites
| Autor: | Fernando Luna-Vera, Miguel A. Hidalgo-Salazar, Bairo Vera-Mondragón, Carolina Caicedo, Juan P. Correa-Aguirre |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Ingeniería de materiales
Materials science Polymers and Plastics injection molding 02 engineering and technology Moldeo de plásticos por inyección recycling DMA 010402 general chemistry 01 natural sciences Article Bagasse lcsh:QD241-441 chemistry.chemical_compound Differential scanning calorimetry Flexural strength lcsh:Organic chemistry Bagazo de caña Recycling Rheological properties Fiber Composite material Injection molding of plastics Polypropylene Injection molding biocomposites Biocomposites Flexural modulus Materials engineering General Chemistry Dynamic mechanical analysis 021001 nanoscience & nanotechnology 0104 chemical sciences rheological properties chemistry Extrusion 0210 nano-technology |
| Zdroj: | Polymers Polymers, Vol 12, Iss 1440, p 1440 (2020) Volume 12 Issue 7 RED: Repositorio Educativo Digital UAO Universidad Autónoma de Occidente instacron:Universidad Autónoma de Occidente |
| ISSN: | 2073-4360 |
| Popis: | This study explores the reprocessing behavior of polypropylene-sugarcane bagasse biocomposites using neat and chemically treated bagasse fibers (20 wt.%). Biocomposites were reprocessed 5 times using the extrusion process followed by injection molding. The mechanical properties indicate that microfibers bagasse fibers addition and chemical treatments generate improvements in the mechanical properties, reaching the highest performance in the third cycle where the flexural modulus and flexural strength increase 57 and 12% in comparison with neat PP. differential scanning calorimetry (DSC) and TGA characterization show that bagasse fibers addition increases the crystallization temperature and thermal stability of the biocomposites 7 and 39 ° C respectively, without disturbing the melting process of the PP phase for all extrusion cycles. The rheological test shows that viscosity values of PP and biocomposites decrease progressively with extrusion cycles however, Cole&ndash Cole plots, dynamic mechanical analysis (DMA), width at half maximum of tan delta peaks and SEM micrographs show that chemical treatments and reprocessing could improve fiber dispersion and fiber&ndash matrix interaction. Based on these results, it can be concluded that recycling potential of polypropylene-sugarcane bagasse biocomposites is huge due to their mechanical, thermal and rheological performance resulting in advantages in terms of sustainability and life cycle impact of these materials. |
| Databáze: | OpenAIRE |
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