Production of high-density polyethylene biocomposites from rice husk biochar: Effects of varying pyrolysis temperature

The Science of the Total Environment
Qingfa ZhangRongge Zou

Abstract

The novelty of this study is to explore the effect of temperature varied biochar on the properties of biochar/polymers composites. Rice husk biochar (RB) samples were prepared at different pyrolysis temperatures and injection molding was used to prepare RB/high-density polyethylene (HDPE) composites. Additionally, ultimate analysis, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), pore structure characteristics, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), tensile properties, and dynamic mechanical analysis (DMA) were used to characterize these RB and RB/HDPE composites samples. The results validated that RB obtained at 600 °C showed the highest carbon content, the most complete pore structure, and the largest specific surface area. Moreover, the thermal studies revealed that the addition of RB improved the thermal stability of HDPE. The best tensile strength (26.25 MPa) and Young's modulus (1.87 GPa) were obtained in 500 °C RB/HDPE composites and 600 °C RB/HDPE composites due to their good physical/mechanical interlocking structures shown in SEM. DMA revealed that the stiffness, elasticity, creep resistance and stress relaxation of the co...Continue Reading

References

Nov 21, 2017·The Science of the Total Environment·Anesh Manjaly PouloseAjit K Sarmah
Aug 6, 2018·The Science of the Total Environment·Lijian LengWenguang Zhou
Feb 12, 2019·The Science of the Total Environment·Sossina GezahegnYang Weimin
Jan 16, 2020·Materials·Mattia BartoliAlberto Tagliaferro

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