Characterization of wood plastic composite based on HDPE and cashew nutshells processed in a thermokinetic mixer
| Autor: | Edcleide Maria Araújo, Marcelo Massayoshi Ueki, Dayanne Diniz de Souza Morais, Marciano Furukava, Ciliana R. Colombo, Amélia S.F. Santos, Victor N.C. Gomes, Amanda G. Carvalho, Carlos A. Paskocimas, Tomas Jefferson Alves de Mélo, Eliton S. Medeiros |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Cashew Nutshells Processed HDPE 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Crystallinity Differential scanning calorimetry Ultimate tensile strength Materials Chemistry Composite material Thermokinetic Mixer Melt flow index Polypropylene Wood-plastic composite General Chemistry Polyethylene 021001 nanoscience & nanotechnology Wood Plastic Composite 0104 chemical sciences chemistry Ceramics and Composites High-density polyethylene 0210 nano-technology |
| Zdroj: | Repositório Institucional da UFRN Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
| Popis: | Wood plastic composites (WPC), which are used in high-value markets, contribute to solve some of the problems associated with municipal solid waste accumulation. In this study, the effect of cashew nutshell powder (CNSP) content on properties of formulationswith recycled high-density polyethylene, 5 wt% of maleic anhydride grafted polypropylene and 5 wt% of struktol TPW 113, a blend of complex, modified fatty acid ester, was evaluated. Mixtures containing from 20 to 60 wt% CNSP were melt-processed, using a thermokinetic mixer. WPC’s were characterized by differential scanning calorimetry, Fourier transform infrared spectroscopy, and melt flow index (MFI) measurements. Composite morphology and mechanical properties were also accessed, respectively, by scanning electron microscopy and tensile tests. Results show that the tensile strength of composites decreased as the content of CNSP increased due to poor reinforcement–matrix interface and voids formed during residual cashew nutshell liquid (CNSL) vaporization. On the other hand, elastic modulus decreased and elongation at break increased, both indicating a plasticizing effect of the residual CNSL, confirmed by crystallinity and MFI data. Differences in the thermal stability of composites were restricted to thermal behavior of main components |
| Databáze: | OpenAIRE |
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