Plasma functionalised Graphene Nanoplatelets

Goodfellow is now offering plasma functionalised Graphene Nanoplatelets. Plasma functionalisation differs from other treatments (or non-treated graphene) as it overcomes the hurdle of graphene's inert nature, allowing it to properly disperse and covalently bond into matrices such as epoxy resins.

Graphene is a carbon based material which is inherently inert and which does not like to mix with, or bond to, other materials. Its excellent properties can only be fully realised when this fundamental hurdle is overcome, and it can be properly dispersed and covalently bonded into matrices such as epoxy resins, improving strength, stiffness and thermal or electrical conductivity.

The two key methods for functionalising graphene are by plasma functionalisation or by acid treatment. Goodfellow is now offering plasma functionalised graphene nanoplatelets. Plasma functionalisation is different from the more common acid treatment methods, as it has been shown to be benign to the structure of the raw material.

• Disc 1 is a pure epoxy disc
• Disc 2 is an epoxy disc with 0.5% non-functionalised carbon nanomaterials added. This clearly shows agglomeration and poor dispersion, and therefore it will have no improvements in its thermal or electrical conductivity, stiffness or strength.
• Disc 3 is an epoxy disc with exactly the same amount of carbon nanomaterials added (0.5 wt.%), however this time they have been functionalised using plasma. The material is homogeneous with well dispersed carbon nanomaterial, and will have improved material characteristics.

The degree to which the surface of the material is functionalised also has an impact on how well the nanoplatelets will mix with the bulk material. To help our customers identify the most appropriate functionalisation level for their product and process, Goodfellow is offering a kit containing high, medium and low levels of functionalisation. After initial results, it is possible to further control the functionalisation level, and therefore we can offer a custom product to suit your application.

Goodfellow Cambridge Ltd

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