Researchers at Penn State and Shinshu University in Japan have developed a simple, scalable method of making graphene oxide (GO) fibers that are strong, stretchable and can be easily scrolled into yarns with strengths approaching that of Kevlar.
The researchers made a thin film of graphene oxide by chemically exfoliating graphite into graphene flakes, which were then mixed with water and concentrated by centrifugation into a thick slurry. The slurry was then spread by bar coating – something like a squeegee – across a large plate. When the slurry dries, it becomes a large-area transparent film that can be carefully lifted off without tearing. The film is then cut into narrow strips and wound on itself with an automatic fiber scroller, resulting in a fiber that can be knotted and stretched without fracturing.
“We found this graphene oxide fiber was very strong, much better than other carbon fibers. We believe that pockets of air inside the fiber keep it from being brittle,” says Mauricio Terrones, professor of physics, chemistry and materials science and engineering at Penn State. Terrones and colleagues believe this method opens up multiple possibilities for useful products. For instance, removing oxygen from the GO fiber results in a graphene fiber with high electrical conductivity. Adding silver nanorods to the graphene film would increase the conductivity to the same as copper, which could make it a much lighter weight replacement for copper transmission lines. Many kinds of highly sensitive sensors are imaginable.
“The importance is that we can do almost any material, and that could open up many avenues – it’s a lightweight material with multifunctional properties,” Terrones remarks.
The Latest on: Graphene oxide fibers
via Google News
The Latest on: Graphene oxide fibers
- A New Nanocomposite Copolymer Based On Functionalised Graphene Oxide for Development of Heart Valveson March 24, 2020 at 3:16 am
In brief, graphene oxide was initially functionalised with the amine group ... Dense connective tissues with evident collagen fibers were observed in Hastalex (42 µm) and GORE-TEX (78 µm) 2 months ...
- Graphene cleans water more effectivelyon March 23, 2020 at 2:01 am
Chalmers’ role in the project will be to perform chemical functionalization of the graphene oxide and of the polymer fibers used in the filters, to enhance their compatibility and their performance in ...
- Robust Silk Fibroin/Graphene Oxide Aerogel Fiber for Radiative Heating Textileson March 21, 2020 at 6:53 pm
However, aerogel fibers generally suffer from poor mechanical properties and complicated preparation processes. Herein, we demonstrate hierarchically porous and continuous silk fibroin/graphene oxide ...
- Ag-fiber/graphene hybrid electrodes for highly flexible and transparent optoelectronic deviceson March 20, 2020 at 3:05 am
In this study, mixed-dimensional TCEs are fabricated based on the two-dimensional graphene and one-dimensional electrospun metal fiber that can address the shortcomings of each electrode.
- Top Players in Graphene For Supercapacitors Market 2020 - Graphene Technologies, Graphage, Nanoinnova, Tanyuan, Grafen, Allightec COon March 20, 2020 at 1:53 am
Graphene For Supercapacitors Market Report covers Regional Segment Analysis, Type, Application, Major Players, Industry Chain Analysis, Competitive Insights and Macroeconomic Analysis. Get Free ...
- Graphene Market to Grow at 36.7% CAGR From 2014 to 2025: Million Insightson March 16, 2020 at 9:21 am
Before it's here, it's on the Bloomberg Terminal.
- Graphene Market 2019 Analysis By Haydale Graphene Indus, Applied Graphene Materials plc, Graphene 3D Lab Incon March 11, 2020 at 5:00 pm
Graphene Market report provides a systematic synopsis on the study for market and how it is influencing the industry. It also helps to know the businesses with most-detailed market segmentation in ...
- Biomaterial discovery enables 3-D printing of tissue-like vascular structureson March 4, 2020 at 2:00 am
An international team of scientists have discovered a new material that can be 3-D printed to create tissue-like vascular structures. In a new study published today in Nature Communications, led ...
- Thomas Swan, graphene center spin new monofiberon February 25, 2020 at 9:31 am
Thomas Swan said GEIC recently produced a fiber using polyamide 6 and a 0.2 percent loading of Thomas Swan's graphene nanoplatelets. Typical application of such a monofiber includes use in carbon ...
- Global Market for Graphene in Batteries and Supercapacitors (2019 to 2030) - ResearchAndMarkets.comon February 20, 2020 at 4:00 pm
"The Global Market for Graphene in Batteries and Supercapacitors" report has been added to ResearchAndMarkets.com's offering. With global energy demands ever-increasing, allied to efforts to ...
via Bing News