Improvement of compressive strength after impact in fibre reinforced polymer composites by matrix modification with thermally reduced graphene oxide

2013 ◽  
Vol 87 ◽  
pp. 36-41 ◽  
Author(s):  
E. Mannov ◽  
H. Schmutzler ◽  
S. Chandrasekaran ◽  
C. Viets ◽  
S. Buschhorn ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Graphene Oxide ◽  
Polymer Composites ◽  
Reduced Graphene Oxide ◽  
Reinforced Polymer ◽  
Reduced Graphene ◽  
Matrix Modification ◽  
Fibre Reinforced Polymer

Superior nano-mechanical properties of reduced graphene oxide reinforced polyurethane composites

RSC Advances ◽  
2015 ◽  
Vol 5 (22) ◽  
pp. 16921-16930 ◽  
Author(s):  
Tejendra K. Gupta ◽  
Bhanu P. Singh ◽  
Ravi Kant Tripathi ◽  
Sanjay R. Dhakate ◽  
Vidya N. Singh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Polymer Composites ◽  
Reduced Graphene Oxide ◽  
Nanomechanical Properties ◽  
Reinforced Polymer ◽  
Reduced Graphene ◽  
Polyurethane Composites

RGO reinforced polymer composites with significantly enhanced nanomechanical properties useful for automobile, wind mill blade industries and also in hard and scratch-less coatings on automotive vehicles have been synthesized.

Facile synthesis of silver-decorated reduced graphene oxide as a hybrid filler material for electrically conductive polymer composites

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15070-15076 ◽  
Author(s):  
Linxiang He ◽  
Sie Chin Tjong
Keyword(s):  
Graphene Oxide ◽  
Polymer Composites ◽  
Reduced Graphene Oxide ◽  
Graphite Oxide ◽  
Conductive Polymer ◽  
Facile Synthesis ◽  
Hybrid Filler ◽  
Electrically Conductive ◽  
Conductive Polymer Composites ◽  
Reduced Graphene

Nano silver-decorated reduced graphene oxide (Ag–RGO) sheets were synthesized by simply dissolving graphite oxide and silver nitrate inN,N-dimethylformamide and keeping the suspension at 90 °C for 12 h.

From graphene oxide to reduced graphene oxide: Enhanced hydration and compressive strength of cement composites

2020 ◽  
Vol 248 ◽  
pp. 118699 ◽  
Author(s):  
Guojian Jing ◽  
Jiaming Wu ◽  
Tianyu Lei ◽  
Shuxian Wang ◽  
Valeria Strokova ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cement Composites ◽  
Reduced Graphene

scholarly journals Effect of reduced graphene oxide (rGO) compaction degree and concentration on rGO-polymer composites printability and cell interactions

2021 ◽  
Author(s):  
Maria Camara Torres ◽  
Ravi Sinha ◽  
Siamak Eqtesadi ◽  
Rune Wendelbo ◽  
Marco Scatto ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Electrical Properties ◽  
Bulk Density ◽  
Polymer Composites ◽  
Reduced Graphene Oxide ◽  
Volume Fraction ◽  
Scale Production ◽  
Melt Compounding ◽  
Reduced Graphene

Graphene derivatives combined with polymers have attracted enormous attention for bone tissue engineering applications. Among others, reduced graphene oxide (rGO) is one of the preferred graphene-based fillers for the preparation of composites via melt compounding, and their further processing into 3D scaffolds, due to its established large-scale production method, thermal stability, and electrical conductivity. In this study, rGO (low bulk density 10g/L) was compacted by densification using a solvent (either acetone or water) prior to melt compounding, to simplify its handling and dosing into a twin-screw extrusion system. The effects of rGO bulk density (medium and high), densification solvent, and rGO concentration (3, 10 and 15% in weight) on rGO dispersion within the composite, electrical conductivity, printability and cell-material interactions were studied. High bulk density rGO (90 g/L) occupied a low volume fraction within polymer composites, offering poor electrical properties but a reproducible printability up to 15 wt% rGO. On the other hand, the volume fraction within the composites of medium bulk density rGO (50 g/L) was higher for a given concentration, enhancing rGO particle interactions and leading to enhanced electrical conductivity, but compromising the printability window. For a given bulk density (50 g/L), rGO densified in water was more compacted and offered poorer dispersability within the polymer than rGO densified in acetone, and resulted in scaffolds with poor layer bonding or even lack of printability at high rGO percentages. A balance in printability and electrical properties was obtained for composites with medium bulk density rGO densified in acetone. Here, increasing rGO concentration led to more hydrophilic composites with a noticeable increase in protein adsorption. Moreover, scaffolds prepared with such composites presented antimicrobial properties even at low rGO contents (3 wt%). In addition, the viability and proliferation of human mesenchymal stromal cells (hMSCs) was maintained on scaffolds with up to 15% rGO and with enhanced osteogenic differentiation on 3% rGO scaffolds.

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