Rheological properties of HDPE/chitosan composites modified with PE-g-MA
| Autor: | Eduardo L. Canedo, Suédina M. L. Silva, Albaniza Alves Tavares, Daniela L.A.C.S. Andrade, Rebecca S. F. Brito, Renate Maria Ramos Wellen, Poliana S. Lima, Pankaj Agrawal, Bárbara Fernanda Figueiredo dos Santos |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Rheometry Mechanical Engineering Maleic anhydride 02 engineering and technology Dynamic mechanical analysis Polyethylene 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Chitosan chemistry.chemical_compound chemistry Rheology Mechanics of Materials Dynamic modulus General Materials Science High-density polyethylene Composite material 0210 nano-technology |
| Zdroj: | Journal of Materials Research. 32:775-787 |
| ISSN: | 2044-5326 0884-2914 |
| DOI: | 10.1557/jmr.2016.519 |
| Popis: | The rheological behavior of composites made with high-density polyethylene (HDPE) and chitosan was studied. Composites were prepared by melt processing in a laboratory internal mixer. Maleic anhydride grafted HDPE (PE-g-MA) was used as compatibilizer to enhance the dispersion of chitosan in the HDPE matrix. Different percentages of chitosan and compatibilizer (up to a maximum of 25 phr) were added into HDPE to prepare composites. Characterization of the composites with parallel plate rheometer and laboratory internal mixer revealed that the presence of chitosan increases the complex viscosity, loss modulus, storage modulus and the torque (i.e., melt viscosity), and the combination chitosan/compatibilizer has a similar, if slighter, effect. At higher filler levels it is clear that the PE-g-MA affected the microstructure of the compounds, possibly increasing matrix–filler interactions and acting as an effective compatibilizer. |
| Databáze: | OpenAIRE |
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