Biochar filled high-density polyethylene composites with excellent properties: Towards maximizing the utilization of agricultural wastes

Zhang, Qingfa; Zhang, Donghong; Xu, Hang; Lu, Wenyu; Ren, Xiajin; Cai, Houzhi; Lei, Hanwu; Huo, Erguang; Zhao, Yunfeng; Qian, Moriko; Lin, Xiaona; Mateo, Wendy

doi:10.1016/j.indcrop.2020.112185

Cited by 94 publications

(53 citation statements)

References 48 publications

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“…A different trend was reported for the mechanical properties that were appreciable different in the comparison between neat and biochar-loaded poly(ethylene) with an improvement of flexural strength and a decrement of the impact strength. Zhang et al [69] valourized agricultural waste streams through pyrolysis, and the resulting biochar was used as filler for ultra-high-density poly(ethylene). The authors observed improvement in their mechanical properties and improvement in the flame retardancy of the high filler loading materials.…”

Section: Fillersmentioning

confidence: 99%

Towards Traditional Carbon Fillers: Biochar-Based Reinforced Plastic

Bartoli¹,

Giorcelli²,

Jagdale³

et al. 2021

Fillers

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The global market of carbon-reinforced plastic represents one of the largest economic platforms. This sector is dominated by carbon black (CB) produced from traditional oil industry. Recently, high technological fillers such as carbon fibres or nanostructured carbon (i.e. carbon nanotubes, graphene, graphene oxide) fillers have tried to exploit their potential but without economic success. So, in this chapter we are going to analyse the use of an unconventional carbon filler called biochar. Biochar is the solid residue of pyrolysis and can be a solid and sustainable replacement for traditional and expensive fillers. In this chapter, we will provide overview of the last advancement in the use of biochar as filler for the production of reinforced plastics.

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Section: Fillersmentioning

confidence: 99%

Towards Traditional Carbon Fillers: Biochar-Based Reinforced Plastic

Bartoli¹,

Giorcelli²,

Jagdale³

et al. 2021

Fillers

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“…In summary, enhanced flame retardancy of polymer composites using BC reinforcement is one of the best techniques, since both environmental sustainability and low-cost are considered. The BC that is derived from wood, grasses and agricultural wastes using any suitable thermo-chemical conversion technique can be effectively used in biocomposites fabrication, which significantly reduces the landfilling of agro wastes and also provides a new platform for the development of new materials [72,73].…”

Section: Biochar (Bc)mentioning

confidence: 99%

A Review on the Flammability Properties of Carbon-Based Polymeric Composites: State-of-the-Art and Future Trends

Babu¹,

Rendén

Mensah

et al. 2020

Polymers

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Carbon based fillers have attracted a great deal of interest in polymer composites because of their ability to beneficially alter properties at low filler concentration, good interfacial bonding with polymer, availability in different forms, etc. The property alteration of polymer composites makes them versatile for applications in various fields, such as constructions, microelectronics, biomedical, and so on. Devastations due to building fire stress the importance of flame-retardant polymer composites, since they are directly related to human life conservation and safety. Thus, in this review, the significance of carbon-based flame-retardants for polymers is introduced. The effects of a wide variety of carbon-based material addition (such as fullerene, CNTs, graphene, graphite, and so on) on reaction-to-fire of the polymer composites are reviewed and the focus is dedicated to biochar-based reinforcements for use in flame retardant polymer composites. Additionally, the most widely used flammability measuring techniques for polymeric composites are presented. Finally, the key factors and different methods that are used for property enhancement are concluded and the scope for future work is discussed.

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“…The porous structure, large specific surface area, high carbon content, and stable physicochemical properties are the main contribution to the improvement of biochar composites. The ash in biochars is mainly composed of K, Ca, Mg, Al, Si, etc existing in the form of oxides or salts, which can improve the strength of the polymers acting as rigid particles [44]. The properties of different biochars are shown in Table 2.…”

Section: Biochar Propertiesmentioning

confidence: 99%

“…It is expected that the inclusion of biochars did not change the crystal planes of polymers because of the amorphous nature of biochars, and polymers provided all the diffraction peaks in the biochar composite system. However, the addition of biochar strongly affected the intensity of diffraction peaks, which can be attributed to the loading reduction of crystalline polymers in the composite system [44]. To intuitively characterize the interfacial characteristics of biochar composites, almost all the relevant scholars have explored the microstructure of biochar composites using the scanning electron microscope (SEM), and the results are similar.…”

Section: Interfacial Characteristicsmentioning

confidence: 99%

“…This is related to the high molecular chain entanglement density, high relative molecular weight, and excellent wear resistance of UHMWPE, in addition to the specific properties of biochars. As for the difference caused by the biochar type, it is mainly affected by biochar strength and rigid inorganic oxides attached to biochars [44]. In addition to improved flexural and tensile properties, the incorporation of biochars can also significantly improve the dynamic mechanical properties (stiffness, elasticity, creep resistance, and anti-stress relaxation ability) of polymers which are better than natural fibers [67,73].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Biocomposites from Organic Solid Wastes Derived Biochars: A Review

Zhang

Cai

et al. 2020

Materials

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The replacement of natural fiber with biochars to prepare biocomposites has attracted widespread attention recently. Biochar has unique properties, including the porous structure, large specific surface area, high thermal stability, good conductivity, renewable and abundant feedstock source, and environmental friendliness, which provide excellent properties, environmental benefits, and low production costs for biochar-based composites. Biocomposites from organic solid waste-derived biochars show good prospects worldwide in terms of positive social, environmental, and economic impacts. This paper reviews current biochars, elucidates the effects of biochars on the characteristics and performance of biochar composites, and points out the challenges and future development prospects of biochar composites.

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Biochar filled high-density polyethylene composites with excellent properties: Towards maximizing the utilization of agricultural wastes

Cited by 94 publications

References 48 publications

Towards Traditional Carbon Fillers: Biochar-Based Reinforced Plastic

Towards Traditional Carbon Fillers: Biochar-Based Reinforced Plastic

A Review on the Flammability Properties of Carbon-Based Polymeric Composites: State-of-the-Art and Future Trends

Biocomposites from Organic Solid Wastes Derived Biochars: A Review

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