Surface-Modified Graphene Oxide-Based Cotton Fabric by Ion Implantation for Enhancing Antibacterial Activity

2019 ◽  
Vol 7 (8) ◽  
pp. 7686-7692 ◽  
Author(s):  
Junhui Hu ◽  
Jian Liu ◽  
Lihui Gan ◽  
Minnan Long
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Ion Implantation ◽  
Cotton Fabric ◽  
Modified Graphene Oxide ◽  
Surface Modified ◽  
Modified Graphene

Surface modified graphene oxide/poly(vinyl alcohol) composite for enhanced hydrogen gas barrier film

2016 ◽  
Vol 50 ◽  
pp. 49-56 ◽  
Author(s):  
Hongyu Liu ◽  
Parthasarathi Bandyopadhyay ◽  
Nam Hoon Kim ◽  
Bongho Moon ◽  
Joong Hee Lee
Keyword(s):  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Hydrogen Gas ◽  
Poly Vinyl Alcohol ◽  
Gas Barrier ◽  
Modified Graphene Oxide ◽  
Surface Modified ◽  
Modified Graphene ◽  
Barrier Film

Reduced and Surface‐Modified Graphene Oxide with Nonlinear Resistivity

2017 ◽  
Vol 38 (16) ◽  
pp. 1700291 ◽  
Author(s):  
Martin Wåhlander ◽  
Fritjof Nilsson ◽  
Richard L. Andersson ◽  
Anna Carlmark ◽  
Henrik Hillborg ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Modified Graphene Oxide ◽  
Surface Modified ◽  
Modified Graphene

Fabrication and characterization of in situ graphene oxide reinforced high-performance shape memory polymeric nanocomposites from vegetable oil

RSC Advances ◽  
2016 ◽  
Vol 6 (33) ◽  
pp. 27648-27658 ◽  
Author(s):  
Rakesh Das ◽  
Sovan Lal Banerjee ◽  
P. P. Kundu
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Linseed Oil ◽  
Polymeric Nanocomposites ◽  
Modified Graphene Oxide ◽  
Fabrication And Characterization ◽  
Surface Modified ◽  
Modified Graphene

Polymeric nanocomposites have been fabricated via in situ cationic polymerization of linseed oil in the presence of surface-modified graphene oxide (SGO).

scholarly journals Characterization of Reduced and Surface-Modified Graphene Oxide in Poly(Ethylene-co-Butyl Acrylate) Composites for Electrical Applications

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 740 ◽  
Author(s):  
Carmen Cobo Sánchez ◽  
Martin Wåhlander ◽  
Mattias Karlsson ◽  
Diana C. Marin Quintero ◽  
Henrik Hillborg ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Butyl Acrylate ◽  
Particle Dispersion ◽  
Butyl Methacrylate ◽  
High Voltage Direct Current ◽  
Modified Graphene Oxide ◽  
Filler Fraction ◽  
Poly Ethylene ◽  
Surface Modified ◽  
Modified Graphene

Promising electrical field grading materials (FGMs) for high-voltage direct-current (HVDC) applications have been designed by dispersing reduced graphene oxide (rGO) grafted with relatively short chains of poly (n-butyl methacrylate) (PBMA) in a poly(ethylene-co-butyl acrylate) (EBA) matrix. All rGO-PBMA composites with a filler fraction above 3 vol.% exhibited a distinct non-linear resistivity with increasing electric field; and it was confirmed that the resistivity could be tailored by changing the PBMA graft length or the rGO filler fraction. A combined image analysis- and Monte-Carlo simulation strategy revealed that the addition of PBMA grafts improved the enthalpic solubility of rGO in EBA; resulting in improved particle dispersion and more controlled flake-to-flake distances. The addition of rGO and rGO-PBMAs increased the modulus of the materials up to 200% and the strain did not vary significantly as compared to that of the reference matrix for the rGO-PBMA-2 vol.% composites; indicating that the interphase between the rGO and EBA was subsequently improved. The new composites have comparable electrical properties as today’s commercial FGMs; but are lighter and less brittle due to a lower filler fraction of semi-conductive particles (3 vol.% instead of 30–40 vol.%).

scholarly journals Antimicrobial Effect of Chitosan Films on Food Spoilage Bacteria

2021 ◽  
Vol 22 (11) ◽  
pp. 5839
Author(s):  
Natalia Wrońska ◽  
Nadia Katir ◽  
Katarzyna Miłowska ◽  
Nisrine Hammi ◽  
Marta Nowak ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Metal Oxide ◽  
Oxide Films ◽  
Nanocomposite Films ◽  
Metal Oxide Films ◽  
Spoilage Bacteria ◽  
Modified Graphene Oxide ◽  
Chitosan Films ◽  
Modified Graphene

Synthetic materials commonly used in the packaging industry generate a considerable amount of waste each year. Chitosan is a promising feedstock for the production of functional biomaterials. From a biological point of view, chitosan is very attractive for food packaging. The purposes of this study were to evaluate the antibacterial activity of a set of chitosan-metal oxide films and different chitosan-modified graphene (oxide) films against two foodborne pathogens: Campylobacter jejuni ATCC 33560 and Listeria monocytogenes 19115. Moreover, we wanted to check whether the incorporation of antimicrobial constituents such as TiO2, ZnO, Fe2O3, Ag, and graphene oxide (GO) into the polymer matrices can improve the antibacterial properties of these nanocomposite films. Finally, this research helps elucidate the interactions of these materials with eukaryotic cells. All chitosan-metal oxide films and chitosan-modified graphene (oxide) films displayed improved antibacterial (C. jejuni ATCC 33560 and L. monocytogenes 19115) properties compared to native chitosan films. The CS-ZnO films had excellent antibacterial activity towards L. monocytogenes (90% growth inhibition). Moreover, graphene-based chitosan films caused high inhibition of both tested strains. Chitosan films with graphene (GO, GOP, GOP-HMDS, rGO, GO-HMDS, rGOP), titanium dioxide (CS-TiO2 20:1a, CS-TiO2 20:1b, CS-TiO2 2:1, CS-TiO2 1:1a, CS-TiO2 1:1b) and zinc oxide (CS-ZnO 20:1a, CS-ZnO 20:1b) may be considered as a safe, non-cytotoxic packaging materials in the future.

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