Synthesis of graphene nanoflakes by grinding natural graphite together with NaCl in a planetary ball mill

Alinejad, Babak; Mahmoodi, Korosh

doi:10.1142/s1793604717500473

Cited by 31 publications

(21 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prepared graphene can be well-dispersed in organic solvents, water, or culture media. Alinejad et al [48] obtained graphene nanoflakes of about 50 × 200 nm 2 by adding NaCl during ball-milling. Because graphene particles are soft, the brittle and hard NaCl particles can serve as milling agents to grind the graphene into thin layers and keep graphene particles away from agglomeration.…”

Section: Ball-millingmentioning

confidence: 99%

Recent Developments Concerning the Dispersion Methods and Mechanisms of Graphene

et al. 2018

View full text Add to dashboard Cite

Graphene, as a reinforcement for composite materials, has become a focus recently. However, the dispersion of graphene in composite materials is a problem that has been difficult to solve for a long time, which makes it difficult to produce and use graphene-reinforced composites on a large scale. Herein, methods to improve the dispersion of graphene and dispersion mechanisms that have been developed in recent years are reviewed, and the advantages and disadvantages of various methods are compared and analyzed. On this basis, the dispersion methods and mechanisms of graphene are prospected, which lays the foundation for graphene application and preparation.

show abstract

Section: Ball-millingmentioning

confidence: 99%

Recent Developments Concerning the Dispersion Methods and Mechanisms of Graphene

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Beside the factor of compatibility between Gnps and polymers, the size and layer number of Gnps also play an important role. Gnps can be prepared by two main methods, the bottom-up and top-down methods [10,11]. e bottom-up methods, such as chemical vapor deposition and epitaxial growth, are expensive and cannot meet the requirement of big quantitative production of Gnps.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Graphene Nanoplatelets by Thermal Shock Combined with Ball Milling Methods for Fabricating Flame-Retardant Polymers

Tran

Doan

Nguyen

et al. 2019

Journal of Chemistry

View full text Add to dashboard Cite

Graphene nanoplatelets were successfully prepared from graphite powder by simple and scalable thermal shock combined with ball milling methods. The formation of the graphene nanoplatelets were observed by field-emission scanning electron microscopes and Brunauer–Emmett–Teller methods with the much smaller number of layers and the considerable increase of specific surface area in comparison to the initial expanded graphite material. The other characterizations such as Fourier transform infrared spectroscopy and X-ray powder diffraction methods of graphene nanoplatelets showed unchanged structure. These graphene nanoplatelets were combined with aluminum trihydroxide and zinc borate to prepare flame-retardant polycarbonate plastic and chlorine-sulfonated polyethylene rubber. The prepared composites showed the improvement of flame resistance properties with V0 level according to the UL-94 test method, and the limiting oxygen index value was higher than 27.

show abstract

“…[101] Alternatively, hydrogen addition is used in mechanochemical reduction of graphene oxide. [102] Meanwhile an extraordinarily wide range of MFG bearing hydroxyl, carboxylic acid, halogen, five-,and six-membered N-heterocycles, sulfonic acid, and even phosphate groups have been prepared via graphite mechanochemistry in the presence of gases like CO 2 , [96,99] N 2 , [103,104] NH 3 , [105] H 2 , [106] O 2 , [100] Cl 2 , [107] F 2 , [107] and SO 2 , [99] liquids like Br 2 , [106,107] H 2 O, [108] SO 3 , [99,109] CO 2 /SO 3 , [99] as well as solids like red phosphorous, [110,111] sulfur, [112][113][114][115] melamine, [116][117][118][119] urea, [104,120,121] KOH, [122] NaCl, [123] Mg, [101] Fe, [124] Si, [125][126][127] polystyrene, [128] cellulose, [64] chitin, [129] polyvinylpyrrolidone, [130] polyetherketone, [131] and I 2 . [106,…”

Section: Introductionmentioning

confidence: 99%

Mechanochemical Routes to Functionalized Graphene Nanofillers Tuned for Lightweight Carbon/Hydrocarbon Composites

Burk¹,

Gliem²,

Mülhaupt³

2018

Macro Materials & Eng

View full text Add to dashboard Cite

Graphite exfoliation by shear‐induced dry and wet processes and especially mechanochemistry represent attractive routes to carbon nanofillers. Dry ball‐milling of graphite in a planetary mill under gas pressure is a scalable and environmentally benign one‐step process, which requires neither hazardous solvents nor tedious separate functionalization and purification steps. Gas type, pressure, and milling duration govern average particle size, shape, and functionalization. Ball‐milling under Ar yields hydroxylated spherical carbon particle agglomerates, whereas ball‐milling under CO2 affords functionalized nanoplatelets without encountering agglomeration problems and highly exothermic post‐milling reactions with air. The carboxylation of graphene nanoplatelets enhances their dispersibility in various media including polypropylene (PP) even in the absence of compatibilizers. Large amounts of carboxylated nanoplatelets are dispersed in PP without massive viscosity build‐up. Functionalized carbon nanoplatelet fillers enable tailoring of recyclable lightweight carbon/hydrocarbon composites exhibiting an improved balance of stiffness, strength, toughness, electrical, and thermal conductivity.

show abstract

Synthesis of graphene nanoflakes by grinding natural graphite together with NaCl in a planetary ball mill

Cited by 31 publications

References 22 publications

Recent Developments Concerning the Dispersion Methods and Mechanisms of Graphene

Recent Developments Concerning the Dispersion Methods and Mechanisms of Graphene

Preparation of Graphene Nanoplatelets by Thermal Shock Combined with Ball Milling Methods for Fabricating Flame-Retardant Polymers

Mechanochemical Routes to Functionalized Graphene Nanofillers Tuned for Lightweight Carbon/Hydrocarbon Composites

Contact Info

Product

Resources

About