PMID- 32531606 OWN - NLM STAT- MEDLINE DCOM- 20200818 LR - 20200818 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 738 DP - 2020 Oct 10 TI - Production of high-density polyethylene biocomposites from rice husk biochar: Effects of varying pyrolysis temperature. PG - 139910 LID - S0048-9697(20)33430-6 [pii] LID - 10.1016/j.scitotenv.2020.139910 [doi] AB - 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 degrees 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 degrees C RB/HDPE composites and 600 degrees 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 composites were improved by the addition of RB. The utilization of temperature varied biochars in biocomposites is important to manage wastes and optimize the properties of biocomposites in terms of reducing production cost and ensuring environmental safety. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Zhang, Qingfa AU - Zhang Q AD - School of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo 255000, China; Department of Biological Systems Engineering, Washington State University, Richland, WA 99354, USA. FAU - Zhang, Donghong AU - Zhang D AD - School of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo 255000, China. FAU - Lu, Wenyu AU - Lu W AD - School of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo 255000, China. FAU - Khan, Muhammad Usman AU - Khan MU AD - Department of Biological Systems Engineering, Washington State University, Richland, WA 99354, USA. FAU - Xu, Hang AU - Xu H AD - School of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo 255000, China. FAU - Yi, Weiming AU - Yi W AD - School of Agricultural Engineering and Food Science, Shandong Research Center of Engineering & Technology for Clean Energy, Shandong University of Technology, Zibo 255000, China. Electronic address: yiweiming@sdut.edu.cn. FAU - Lei, Hanwu AU - Lei H AD - Department of Biological Systems Engineering, Washington State University, Richland, WA 99354, USA. Electronic address: hlei@wsu.edu. FAU - Huo, Erguang AU - Huo E AD - Department of Biological Systems Engineering, Washington State University, Richland, WA 99354, USA. FAU - Qian, Moriko AU - Qian M AD - Department of Biological Systems Engineering, Washington State University, Richland, WA 99354, USA. FAU - Zhao, Yunfeng AU - Zhao Y AD - Department of Biological Systems Engineering, Washington State University, Richland, WA 99354, USA. FAU - Zou, Rongge AU - Zou R AD - Department of Biological Systems Engineering, Washington State University, Richland, WA 99354, USA. LA - eng PT - Journal Article DEP - 20200603 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (biochar) RN - 16291-96-6 (Charcoal) RN - 9002-88-4 (Polyethylene) SB - IM MH - Charcoal MH - *Oryza MH - Polyethylene MH - *Pyrolysis MH - Temperature OTO - NOTNLM OT - Biocomposites OT - Formulation optimization OT - Properties regulation OT - Temperature varied biochars COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2020/06/13 06:00 MHDA- 2020/08/19 06:00 CRDT- 2020/06/13 06:00 PHST- 2020/01/31 00:00 [received] PHST- 2020/05/25 00:00 [revised] PHST- 2020/06/01 00:00 [accepted] PHST- 2020/06/13 06:00 [pubmed] PHST- 2020/08/19 06:00 [medline] PHST- 2020/06/13 06:00 [entrez] AID - S0048-9697(20)33430-6 [pii] AID - 10.1016/j.scitotenv.2020.139910 [doi] PST - ppublish SO - Sci Total Environ. 2020 Oct 10;738:139910. doi: 10.1016/j.scitotenv.2020.139910. Epub 2020 Jun 3.