Photoinduced Terahertz Conductivity and Carrier Relaxation in Thermal-Reduced Multilayer Graphene Oxide Films

2017 ◽  
Vol 121 (4) ◽  
pp. 2451-2458 ◽  
Author(s):  
Xiao Xing ◽  
Litao Zhao ◽  
Zeyu Zhang ◽  
Liang Fang ◽  
Zhengfu Fan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Films ◽  
Multilayer Graphene ◽  
Carrier Relaxation ◽  
Terahertz Conductivity

scholarly journals Room-temperature metastability of multilayer graphene oxide films

2012 ◽  
Vol 11 (6) ◽  
pp. 544-549 ◽  
Author(s):  
Suenne Kim ◽  
Si Zhou ◽  
Yike Hu ◽  
Muge Acik ◽  
Yves J. Chabal ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Room Temperature ◽  
Oxide Films ◽  
Multilayer Graphene

Terahertz Conductivity of Graphene Oxide Films Reduced in Relatively Lower Temperature

2016 ◽  
Author(s):  
Amit C. Das ◽  
Tridib Sinha ◽  
Sayantan Bhattacharya ◽  
Rishi maiti ◽  
Shriganesh S. Prabhu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Films ◽  
Lower Temperature ◽  
Terahertz Conductivity

scholarly journals Terahertz conductivity of reduced graphene oxide films

2013 ◽  
Vol 21 (6) ◽  
pp. 7633 ◽  
Author(s):  
J. T. Hong ◽  
K. M. Lee ◽  
B. H. Son ◽  
S. J. Park ◽  
D. J. Park ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Oxide Films ◽  
Reduced Graphene ◽  
Terahertz Conductivity

Interfacial Shear Strength of Multilayer Graphene Oxide Films

ACS Nano ◽  
2016 ◽  
Vol 10 (2) ◽  
pp. 1939-1947 ◽  
Author(s):  
Matthew Daly ◽  
Changhong Cao ◽  
Hao Sun ◽  
Yu Sun ◽  
Tobin Filleter ◽  
...  
Keyword(s):  
Shear Strength ◽  
Graphene Oxide ◽  
Interfacial Shear Strength ◽  
Oxide Films ◽  
Interfacial Shear ◽  
Multilayer Graphene

Preparation of biaxially oriented polyamide 6/polyketone/graphene oxide films with enhanced barrier and mechanical behaviors

2021 ◽  
Vol 138 (21) ◽  
pp. 50501
Author(s):  
Fenglong Lin ◽  
Yuejun Liu ◽  
Lijun Song ◽  
Xihai Hao ◽  
Xiaochao Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Films ◽  
Polyamide 6 ◽  
Mechanical Behaviors

scholarly journals High-Tribological-Performance Polymer Nanocomposites: An Approach Based on the Superlubricity State of the Graphene Oxide Agglomerates

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2237
Author(s):  
Eder H. C. Ferreira ◽  
Angela Aparecida Vieira ◽  
Lúcia Vieira ◽  
Guilhermino J. M. Fechine
Keyword(s):  
Graphene Oxide ◽  
High Viscosity ◽  
Tribological Performance ◽  
Multilayer Graphene ◽  
High Concentration ◽  
Scanning Calorimetry ◽  
Mechanical Reinforcement ◽  
Transmission Electron ◽  
Twin Screw ◽  
Mechanical Tensile

Here, nanocomposites of high-molecular-weight polyethylene (HMWPE) and HMWPE-UHMWPE (80/20 wt.%) containing a low amount of multilayer graphene oxide (mGO) (≤0.1 wt.%) were produced via twin-screw extrusion to produce materials with a higher tribological performance than UHMWPE. Due to the high viscosity of both polymers, the nanocomposites presented a significant concentration of agglomerates. However, the mechanical (tensile) and tribological (volumetric loss) performances of the nanocomposites were superior to those of UHMWPE. The morphology of the nanocomposites was investigated using differential scanning calorimetry (DSC), microtomography, and transmission electron microscopy (TEM). The explanation for these results is based on the superlubricity phenomenon of mGO agglomerates. It was also shown that the well-exfoliated mGO also contained in the nanocomposite was of fundamental importance as a mechanical reinforcement for the polymer. Even with a high concentration of agglomerates, the nanocomposites displayed tribological properties superior to UHMWPE’s (wear resistance up to 27% higher and friction coefficient up to 57% lower). Therefore, this manuscript brings a new exception to the rule, showing that agglomerates can act in a beneficial way to the mechanical properties of polymers, as long as the superlubricity phenomenon is present in the agglomerates contained in the polymer.

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