The example above shows how functionalization prevented agglomeration after mixing, and ensured high compatibility of functionalized graphene in the mixture.
Introduction
Functionalization of graphene – along with its subsequent dispersion – is paramount, as it makes graphene (more) adaptable for a lot of application. For example, we cite that both covalent and non-covalent techniques are very effective in making graphene readily usable and ‘processable’.
The figure above shows (a) the result of hand-mixing graphene and a macromolecular plasticizer (for elastomer) in solution, where graphene particles fail to disperse and begin to deposit after only few minutes/hours; and (b) graphene homogeneously and stably dispersed in solution after it was chemically functionalized with the same plasticizer, where no particles deposit are visible after one year (at time of this writing), and still counting.
What can CealTech offer you?
We can provide various ways to functionalize graphene and graphene derivatives depending on your material and your industrial process, thus expanding the number of potential application for graphene-based materials.
We can functionalize graphene both non-covalently or covalently to make graphene-bearing, to name but a few:
• Hydrogen, halogen, nitrogen, boron and other elements;
• Amine, isocyanate, hydroxyl, epoxy, carboxyl and other groups;
• Radicals for insitu polymerization;
• Organic molecules;
• Macromolecules/polymers;
• Metal/metal oxide nanoparticle, nanowire and other material, such as other carbon nanostructures (C60, CNT).
The potential applications of functionalized graphene include for example:
• Composites, elastomers, paints and coatings;
• Electronics: flexible electronics-transparent conductive coating, touch screen displays, electronic paper, organic light-emitting diodes (OLEDs), high-frequency transistors, and logic transistor;
• Photonics: photodetectors, optical modulator, and optical polarization controller;
• Energy generation and storage: battery, supercapacitor, fuel cell, and solar cell;
• Sensors and metrology;
• Medical: drug delivery, biosensor, bio-imaging and others;
• Green chemistry: water remediation, CO2 capture, ultrafiltration;
In addition to other applications, such as: catalysts, lubricants, nano-antennas, coolant additives, thermal management, anti-fouling, corrosion resistance, electromagnetic shielding, and structural material.
For more details, contact sales@cealtechdev.wpengine.com
