Derived from poplar leaves graphene-modified silicone rubber composites

Wu, Weili; Huang, He

doi:10.1177/0892705719833119

Cited by 8 publications

(7 citation statements)

References 26 publications

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“…Although graphene samples and CGr have the same peak position at 2θ = 26:5°, the peak intensities of the graphene products synthesized at 500-800°C are lower than those of CGr. This result indicates the transformation of graphite to graphene, which is in accordance with literature [33][34][35].…”

Section: Resultssupporting

confidence: 92%

Green Synthesis of Graphene from Graphite in Molten Salt Medium

Gürünlü

Yücedağ

2020

Journal of Nanomaterials

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Green synthesis of graphene from graphite was carried out in molten salt mixture of LiCl-KCl, which is an environmentally friendly alternative to traditional methods using a large number of chemicals. The effect of carbonization temperature on the final properties of graphene products was investigated at a temperature range of 500-800°C. The layer numbers of graphene products were determined as a single layer and few layers by XRD and Raman analyses. The highest conductivity value of 1219 S/m was reached with the sample synthesized at 600°C (GGr600), which is 10-fold higher than that of commercial graphene (CG) (115 S/m). The percentage of carbon contents of GGr600 and sample synthesized at 800°C (GGr800) was determined as 86% and 73% by XPS. From the SEM analyses, it was observed that graphene products have sheet-like structures. A TEM image showed that GGr800 has the thickness changing from 5-9 nm, pointing out the graphene with few layers. AFM analysis demonstrated that GGr600 has a single-layer sheet-like structure.

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Section: Resultssupporting

confidence: 92%

Green Synthesis of Graphene from Graphite in Molten Salt Medium

Gürünlü

Yücedağ

2020

Journal of Nanomaterials

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“…However, incorporation of reinforcing particles and/or fibres in polymer matrix has shown good potential in restricting the mobility of their molecular chains on the application of load and/or heat with enhancement in mechanical, thermal, thermomechanical properties, etc. 11,12 On that note, various degrees of improvement in tensile strength, flexural strength, modulus, impact strength, thermal, and thermomechanical properties of PP matrix using CNTs have been reported. 2,5,13 However, the endless need for further improvement in the dispersion and adhesion of CNTs with PP matrix to significantly enhance mechanical, thermal, and thermomechanical properties of PP for various advanced engineering applications formed the focus of this study.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical and dynamic mechanical properties of polymer nanocomposites containing carbon nanotubes decorated with barium titanate

Uyor

Popoola

2022

Polymers and Polymer Composites

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This study presents functionalized carbon nanotubes (CNTs) decorated with functionalized barium titanate (BT) (denoted as BT@CNTs) via hydrothermal and self-assembly methods to improve dispersion in polypropylene (PP) matrix with enhanced thermal, mechanical, and thermomechanical properties. The CNTs, BT, and BT@CNTs with the addition of polypropylene maleic anhydride (PPMA) compatibilizer were used in the fabrication of the PP based nanocomposites for this study via solution mixing and melt compounding. FTIR, TEM, and SEM analyses, respectively revealed that the nanoparticles were successfully functionalized, CNTs decorated with BT, and well dispersion in the PP matrix. PP/BT@CNTs-based nanocomposite showed optimal tensile strength, modulus, heat deflection, and thermal stability of about 16.8%, 26.5%, 20.1%, and 30oC higher than that obtained for the pure PP. These properties were also respectively 10.6%, 17.6%, 19.0%, and 5.0oC higher than PP/3CNTs nanocomposite when compared to PP/3BT@CNTs. The PP/BT@CNTs based nanocomposites also revealed enhanced dynamic mechanical properties. The better performance in the measured properties of PP/BT@CNTs compared to pure PP and PP/CNTs were attributed to their uniform microstructures, effective interlocking of the PP matrix due to the presence of BT on CNTs surfaces.

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Section: Introductionmentioning

confidence: 99%

“…7,15,16 Various studies have presented enhanced properties of polymer nanocomposites containing CNTs or GNs. For instance, the following engineering properties of polymers have been significantly enhanced using such carbon-based nanofillers; thermal responses, 17,18 mechanical properties, 19,20 wear properties, 21,22 dielectric and electrical properties. 23,24 However, studies have also shown that hybridization of CNTs and GNs in a polymer matrix can result to better mechanical and thermal properties compared to their individual nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Tribological and nanomechanical responses of 3D microstructured polypropylene matrix using interpenetrated graphene-carbon nanotubes

Uyor

Popoola

et al. 2021

Journal of Thermoplastic Composite Materials

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This study utilized 1D carbon nanotubes (CNTs) and 2D graphene nanosheets (GNs) in preparation of 3D microstructured polypropylene (PP) nanocomposites with improved anti-wear and nanomechanical responses. The nanocomposites fabricated through melt compounding using Haake Rheomixer showed well dispersed nanoparticles in the matrix due to the aid of PP grafted maleic anhydride (PP-g-MA) coupling agent. The developed PP-CNTs-GNs hybrid nanocomposite showed lower coefficient of friction compared to the pure PP and its nanocomposites containing individual CNTs and GNs. PP-1CNTs-1GNs hybrid nanocomposite had lower wear rate of about 1.01 × 10−5 mm3/mN compared to 8.9 × 10−5 mm3/mN, 4.2 × 10−5 mm3/mN, and 4.8 × 10−5 mm3/mN measured for the pure PP, PP-3CNTs and PP-3GNs nanocomposites, respectively. The PP-1CNTs-1GNs nanocomposite respectively showed reduction in mass loss of about 78.7%, 62.2%, and 69.1% when related to the pure PP, PP-3CNTs and PP-3GNs nanocomposites. Maximum hardness and elastic modulus of about 153 MPa and 2.7 GPa were measured for PP-3CNTs-1GNs hybrid nanocomposite, while about 86.4 MPa and 1.5 GPa were recorded for the pure PP, respectively. The enhanced properties of the hybrid nanocomposites are due to the good synergetic effect of CNTs-GNs and the formation of 3D microstructures in the PP matrix with relaxed molecular chains and network hardening of the PP matrix.

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Derived from poplar leaves graphene-modified silicone rubber composites

Cited by 8 publications

References 26 publications

Green Synthesis of Graphene from Graphite in Molten Salt Medium

Green Synthesis of Graphene from Graphite in Molten Salt Medium

Enhanced mechanical and dynamic mechanical properties of polymer nanocomposites containing carbon nanotubes decorated with barium titanate

Tribological and nanomechanical responses of 3D microstructured polypropylene matrix using interpenetrated graphene-carbon nanotubes

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