Biochar as a cheap and environmental friendly filler able to improve polymer mechanical properties

Giorcelli, Mauro; Khan, Abdul Wasay; Pugno, Nicola; Rosso, Carlo; Tagliaferro, Alberto

doi:10.1016/j.biombioe.2018.11.036

Cited by 99 publications

(70 citation statements)

References 16 publications

(15 reference statements)

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“…Recently, biochar (BC) has attracted increasing interest as far as its utilization as filler for polymer-based composites, either thermoplastics or thermosets, is concerned [19,20]. BC is usually obtained from the pyrolysis of agricultural and forestry wastes [21], and its structure can be tuned depending on the pyrolysis conditions; in particular, by adjusting the temperature and the oxygen flow, the degree of internal porosity and the presence of different functional groups anchored to the surface can be tailored [22].…”

Section: Introductionmentioning

confidence: 99%

Poly(lactic Acid)–Biochar Biocomposites: Effect of Processing and Filler Content on Rheological, Thermal, and Mechanical Properties

2020

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Biocomposites based on poly(lactic acid) (PLA) and biochar (BC) particles derived from spent ground coffee were prepared using two different processing routes, namely melt mixing and solvent casting. The formulated biocomposites were characterized through rheological, thermal, and mechanical analyses, aiming at evaluating the effects of the filler content and of the processing method on their final properties. The rheological characterization demonstrated the effectiveness of both exploited strategies in achieving a good level of filler dispersion within the matrix, notwithstanding the occurrence of a remarkable decrease of the PLA molar mass during the processing at high temperature. Nevertheless, significant alterations of the PLA rheological behavior were observed in the composites obtained by melt mixing. Differential scanning calorimetry (DSC) measurements indicated a remarkable influence of the processing method on the thermal behavior of biocomposites. More specifically, melt mixing caused the appearance of two melting peaks, though the structure of the materials remained almost amorphous; conversely, a significant increase of the crystalline phase content was observed for solvent cast biocomposites containing low amounts of filler that acted as nucleating agents. Finally, thermogravimetric analyses suggested a catalytic effect of BC particles on the degradation of PLA; its biocomposites showed decreased thermal stability as compared with the neat PLA matrix.

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Section: Introductionmentioning

confidence: 99%

Poly(lactic Acid)–Biochar Biocomposites: Effect of Processing and Filler Content on Rheological, Thermal, and Mechanical Properties

2020

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“…Giorcelli et al . reported the use of high thermal treated biochar for the production of conductive epoxy composite while other studies reported the improvement of mechanical properties of biochar containing reinforced plastics . Recently, Bartoli et al .…”

Section: Introductionmentioning

confidence: 99%

Effect of incorporation of microstructured carbonized cellulose on surface and mechanical properties of epoxy composites

Bartoli

Rosso

Giorcelli

et al. 2019

J of Applied Polymer Sci

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In this study, we reported the use of cellulose derived microstructured biochars for the production of reinforced plastics. Cellulose nanocrystals and wasted cotton fibers were used as cellulose template structures and converted into carbonaceous materials under pyrolytic conditions. Biochars particles were produced with the shape of deformed spheres or rods and dispersed into an epoxy matrix with a loading ranging from 1 wt % to 10 wt %. Biochar-based composites showed remarkably elongation properties of up to 8.2% using 2 wt % of carbonized cellulose nanocrystals and a very low friction coefficient of 0.22 using 10 wt % of carbonized cotton fibers. © 2019Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48896. HIGHLIGHTS:• Carbon spheres and carbon rods were produced through pyrolytic conversion of cellulose nanocrystals and wasted cotton fibers.• Mechanical properties of carbon spheres and carbon rods epoxy composites were studied showing the differences induced by the particle shapes. • An ultimate tensile strength improvement of 57% was reached using 5 wt % of carbonized cellulose nanocrystals.• A maximum elongation improvement of 100% was reached using 2 wt % of carbonized cellulose nanocrystals.• A friction coefficient reduction of 61% was reached using 10 wt % of carbonized cotton fibers.

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“…Similarly, Giorcelli et al [63] proved the effectiveness of maple tree-derived biochar produced at 600°C and 1000°C, observing a drastic improvement of maximum elongation compared with neat resin.…”

Section: Fillersmentioning

confidence: 88%

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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Biochar as a cheap and environmental friendly filler able to improve polymer mechanical properties

Cited by 99 publications

References 16 publications

Poly(lactic Acid)–Biochar Biocomposites: Effect of Processing and Filler Content on Rheological, Thermal, and Mechanical Properties

Poly(lactic Acid)–Biochar Biocomposites: Effect of Processing and Filler Content on Rheological, Thermal, and Mechanical Properties

Effect of incorporation of microstructured carbonized cellulose on surface and mechanical properties of epoxy composites

Towards Traditional Carbon Fillers: Biochar-Based Reinforced Plastic

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