Properties evaluation of biochar/high-density polyethylene composites: Emphasizing the porous structure of biochar by activation

Zhang, Qingfa; Xu, Hang; Lu, Wenyu; Zhang, Donghong; Ren, Xiajin; Yu, Wenfan; Wu, Juanjuan; Zhou, Liang; Han, Xiangsheng; Yi, Weiming; Lei, Hanwu

doi:10.1016/j.scitotenv.2020.139770

Cited by 40 publications

(18 citation statements)

References 58 publications

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“…The tensile properties of the biochar filled composites were observed to be better than both neat HDPE and untreated rice husk (RH) filled composites. The reason for poor tensile properties of rice husk filled composites is the incompatibility between the matrix and the filler, due to the polar nature of rice husk [ 68 ]. On carbonization, the polarity of the filler goes down due to the removal of polar functional groups, this phenomenon improves as the temperature of carbonization increases.…”

Section: Composite Propertiesmentioning

confidence: 99%

“…It was observed that the storage modulus of the composites decreased on increase in temperature throughout the experiment. This decrease was due to the increase of thermal movement of thermoplastic matrix molecules in the composite [ 66 , 68 ]. It was reported that the storage modulus of all the composites was higher compared to neat HDPE.…”

Section: Composite Propertiesmentioning

confidence: 99%

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Incorporation of Biochar to Improve Mechanical, Thermal and Electrical Properties of Polymer Composites

et al. 2021

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The strive for utilization of green fillers in polymer composite has increased focus on application of natural biomass-based fillers. Biochar has garnered a lot of attention as a filler material and has the potential to replace conventionally used inorganic mineral fillers. Biochar is a carbon rich product obtained from thermochemical conversion of biomass in nitrogen environment. In this review, current studies dealing with incorporation of biochar in polymer matrices as a reinforcement and conductive filler were addressed. Each study mentioned here is nuanced, while addressing the same goal of utilization of biochar as a filler. In this review paper, an in-depth analysis of biochar and its structure is presented. The paper explored the various methods employed in fabrication of the biocomposites. A thorough review on the effect of addition of biochar on the overall composite properties showed immense promise in improving the overall composite properties. An analysis of the possible knowledge gaps was also done, and improvements were suggested. Through this study we tried to present the status of application of biochar as a filler material and its potential future applications.

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Section: Composite Propertiesmentioning

confidence: 99%

Section: Composite Propertiesmentioning

confidence: 99%

Incorporation of Biochar to Improve Mechanical, Thermal and Electrical Properties of Polymer Composites

et al. 2021

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“…On the one hand, 500CSB was obtained under 500°C, and the main polar functional groups were removed during the preparation process. The improvement of interface bonding is bene cial to the tensile strength of 500CSB-L. On the other hand, the mechanical interlock structure of 500CSB-L caused by porous structure and high speci c surface area of 500CSB can effectively prevent the tensile deformation of the LLDPE, and thus the tensile strength was improved [29].…”

Section: Tensile Propertiesmentioning

confidence: 99%

Sustainable biocomposites produced from cotton stalk wastes: Effect of heat treatment

Zhang

et al. 2022

J Polym Res

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The novelty of this study is to explore the effect of heat treatment of CS on the properties of biocomposites. 200°C, 300°C, 500°C, and burning of 500°C were selected to heat treat CS to obtain CS llers, and the biocomposites were prepared using CS llers and LLDPE. The heat treatment of CS can improve the interface bonding and compatibility of biocomposites by the results of FTIR, SEM, and CA.The crystal planes were not changed by the addition of CS llers. The heat treatment of CS promoted crystallization, improved the heat resistance of LLDPE. In addition, the exural properties, tensile properties, stiffness, elasticity, creep resistance and, stress relaxation resistance were all increased by the heat treatment of CS, although it exhibits an adverse effect on the impact strength of LLDPE. The best exural properties (13.00 MPa and 0.75 GPa) were obtained in 200CSB-L due to the enhancement of CS rigidity by 200°C heat treatment, and the best tensile properties (10.89 MPa and 0.26 GPa) were obtained in 500CSB-L due to its mechanical interlocking structure. The results of this study indicate that heat treatment will play an important role in biocomposites in terms of the bene t in mechanical properties.

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“…2C, the oxygen-containing groups in aluminum silicate fibers can form hydrogen bonds with the hydroxyl hydrogen in CS, resulting in the shift of the characteristic peaks. The noncovalent interactions (hydrogen bond, π-π stacking, and electrostatic interactions) on the interfaces in wood-plastic composites were crucial to the enhancement of materials properties, as they can regulate the interfacial binding situations and endow materials capabilities to resist external forces and invasions (Peri 1966;Armistead and Hockey 1967;Paul and Yates 1991;Slavov et al 1996;Li and Matuana 2003;Zhang et al 2020).…”

Section: Ft-ir Analysismentioning

confidence: 99%

Aluminum silicate fibers reinforced wood-plastic composites: A strengthening strategy based on the interfacial interactions between inorganic fibers and organic agricultural wastes

Han

et al. 2021

BioRes

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Using the methods of high-speed mixing, screw extrusion, and injection molding, wood-plastic composites (CS-PF-ASFX) with inorganic fibers (aluminum silicate fibers, ASF) and organic agricultural wastes (cotton stalk, CS) as reinforcing fillers were prepared. The effects of different contents of ASF on the properties of wood-plastic composites were analyzed. Materials were characterized by Fourier infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric (TG) analyses. The creep, relaxation, and mechanical behavior were also tested. With the increase of ASF contents, the FT-IR peaks at approximately 1740 cm-1 shifted to lower wavenumber, indicating the potential interactions between ASF and CS. The XRD patterns of the composites implied that the crystal structures of each component were maintained. Moreover, the addition of ASF enhanced the mechanical properties and thermal stabilities of CS-PF-ASFX composites, and the tensile strength and impact strength reached maximum of approximately 39.4 MPa and approximately 3.89 kJ/m2, respectively.

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Properties evaluation of biochar/high-density polyethylene composites: Emphasizing the porous structure of biochar by activation

Cited by 40 publications

References 58 publications

Incorporation of Biochar to Improve Mechanical, Thermal and Electrical Properties of Polymer Composites

Incorporation of Biochar to Improve Mechanical, Thermal and Electrical Properties of Polymer Composites

Sustainable biocomposites produced from cotton stalk wastes: Effect of heat treatment

Aluminum silicate fibers reinforced wood-plastic composites: A strengthening strategy based on the interfacial interactions between inorganic fibers and organic agricultural wastes

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