Reinforcement of graphene in natural rubber nanocomposite

Azira, A. A.; Kamal, Mazlina Mustafa; Rusop, M.

doi:10.1063/1.4948821

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…The two main reasons can explain the improvement of mechanical properties. Moreover, Figure B shows tensile strength of this study as well as other's work . It can be seen that tensile strength of NR only filled with 2 wt% GNs reaches 26.45 MPa.…”

Section: Resultssupporting

confidence: 62%

Enhanced mechanical property, thermal and electrical conductivity of natural rubber/graphene nanosheets nanocomposites

Qin

Deng

et al. 2019

Polymer Composites

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Graphene nanosheets (GNs) were prepared by supercritical solvent intercalation method and cyclic stripping method under high pressure and stress. This “non‐chemical method” reduces impurities and avoids the destruction of graphene's intrinsic structure. In order to decrease the secondary stacking in processing, firstly GNs were dispersed in natural rubber (NR) latex to prepare NR/GNs concentrated master batch, and then combined with solid NR by mechanical blending. Since GNs have good dispersion in rubber matrix, a strong intermolecular force is formed between GNs and NR. Tensile strength, elongation at break, stress at 100% strain, stress at 300% strain, and tear strength of NR/GNs nanocomposites with 2 wt% GNs are enhanced 59.53%, 17.85%, 67.07%, 80.12% and19.20% respectively compared with NR. With more GNs, the NR/GNs nanocomposites exhibit lower Tg and better thermal stability. When the content of GNs in NR/GNs nanocomposites reaches 2 wt%, the Tg of nanocomposites drops about 2°C, and the remaining carbon at 600°C of nanocomposites increase by 3.07%. Moreover, It is demonstrated that the NR filled with 2 wt% GNs possess excellent thermal conductivity of 0.24 W m−1 K−1，which is a 50% increment compared with pure NR. Meanwhile, the electrical conductivity of the composites increases by four orders of magnitude than that of pure NR. These results clearly indicate that GNs can be expected to be manufactured at large scale and utilized in heat‐conducting and antistatic rubber.

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Section: Resultssupporting

confidence: 62%

Enhanced mechanical property, thermal and electrical conductivity of natural rubber/graphene nanosheets nanocomposites

Qin

Deng

et al. 2019

Polymer Composites

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“…Both computational and experimental studies on polymer blends also predicted similar functional reinforcements in thermal and electrical conductivity as well as in mechanical properties 11–13 . Elastomers, that is, rubbers are a class of polymers that have been studied enormously with pristine and hybrid 14 or doped graphene‐based nanofillers 15 and have displayed drastic changes in their functional and mechanical properties 16–23 . Functional properties, such as thermal 14,24 and electrical conductivity, and barrier properties of such elastomer composites have enhanced colossally 25–32 .…”

Section: Introductionmentioning

confidence: 79%

Unique graphene‐carbon black hybrid nanofiller by a micromechanical cleavage technique as a reinforcing agent in elastomers: Fundamental and experimental studies

Roy

Kar

Ghosal

et al. 2023

J of Applied Polymer Sci

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In this work, a synthetic technique was developed which effected delamination of graphite into graphene with simultaneous disaggregation of carbon black clusters and formation of secondary attachment between the two. Styrene butadiene rubber nanocomposite with this hybrid filler exhibited substantial reinforcement in the mechanical properties, wear resistance and rubber-filler interactions. The hybrid nanofiller was superior to conventional carbon black, imparting 57% increase in tensile strength of the nanocomposite. The composite with the hybrid filler also exhibited improved modulus and traction. A detailed analysis of mechanism of reinforcement by the hybrid filler is proposed by the computation of root mean square end-to-end network chain distance and the lateral tube dimension employing the entangled-bound-rubber-tube (EBT) model. This neoteric hybrid nanofiller overcame the so-called dispersibility issues and could be exploited as a part of replacement of carbon black, a synthetic material from fossil fuel by sustainable natural filler.

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“…Fillers like carbon‐based nanomaterials, silica, and nano‐clays are reported to impart superior mechanical as well as functional properties in polymer composites compared to other particulate fillers, even with lower amount of filler loading. [ 3‐5 ] Despite there being different classes of nanomaterials reported, the impact of incorporation of graphite and its derivatives to the polymer matrix is peerless. [ 6 ] These materials are very proficient in enhancing the properties of polymer nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…[ 9‐18 ] Simple preparation of graphene by tip‐sonication of graphite followed by mixing with rubbers in internal mixing resulted in considerable enhancement in tensile and tear strength in epoxidized natural rubber composites. [ 5 ] Magnification of functional properties such as electrical and thermal conductivity has also been achieved by types of graphene incorporated in rubber by latex mixing. [ 18,19 ]…”

Section: Introductionmentioning

confidence: 99%

Study of reinforcement mechanism and structural elucidation of expanded graphite‐carbon black hybrid filler‐SBR nanocomposites through comprehensive analysis of mechanical properties and small angle X‐ray data

Roy

Mondal

Kar

et al. 2020

J of Applied Polymer Sci

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Use of hybrid fillers as a reinforcing agent for polymers is found to be critical step toward developing a high-performance composite material. However, limited know-how on the nature of interaction of the hybrid fillers with the polymer chains resulted in a major impediment toward large-scale transmissibility of such a technology. Herein, we report about a strategy, wherein the polymer composite (free of curatives), comprising of hybrid filler and its gel was leveraged to effectively understand the physics involved toward reinforcement. Styrene-butadiene random copolymer as the matrix, and combination of expanded graphite and carbon black (N220) as the model hybrid filler were selected. The hybrid filler containing composite (SG22) demonstrated significant improvement in terms of the physico-mechanical properties such as tensile strength, modulus and so forth compared to the neat carbon black-filled system (S22). Stress-relaxation studies indicated that SG22 registered minimal decay in the force with time compared to S22. SG22 demonstrated a gel fraction of 68 ± 1% while 56 ± 1% was noted for S22. Further, rheometric studies like strain sweep, frequency sweep, complex viscosity of the gel fragments indicated the formation of fractal network of the hybrid fillers inside the polymer matrix. Small angle X-ray studies corroborated the crucial role played by the expanded graphite sheets in determining the microstructure of the composite owing to their lubrication effect and segregation of carbon black agglomerates by cutting through their sharp edges resulting in a well-distributed filler network.

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Reinforcement of graphene in natural rubber nanocomposite

Cited by 7 publications

References 24 publications

Enhanced mechanical property, thermal and electrical conductivity of natural rubber/graphene nanosheets nanocomposites

Enhanced mechanical property, thermal and electrical conductivity of natural rubber/graphene nanosheets nanocomposites

Unique graphene‐carbon black hybrid nanofiller by a micromechanical cleavage technique as a reinforcing agent in elastomers: Fundamental and experimental studies

Study of reinforcement mechanism and structural elucidation of expanded graphite‐carbon black hybrid filler‐SBR nanocomposites through comprehensive analysis of mechanical properties and small angle X‐ray data

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