Plasma modification of graphene nanoplatelets surfaces

Area of Science:

• Materials Science
• Surface Chemistry
• Plasma Physics

Background:

• Graphite-based materials, particularly graphite nanoplatelets (GnP), are crucial for advanced applications.
• Surface modification is key to optimizing GnP properties for composite materials.
• Atmospheric plasma processing offers a safe and effective method for surface functionalization.

Purpose of the Study:

• To investigate the surface modification of graphite nanoplatelets (GnP) using atmospheric plasma.
• To evaluate the impact of different plasma source gases (C4F8 and O2) on GnP surface characteristics.
• To assess the influence of plasma treatment on GnP dispersion and functionalization for composite applications.

Main Methods:

• Utilized atmospheric plasma processing with C4F8 and O2 as source gases in a rotary reactor.
• Employed various analytical techniques to characterize the modified GnP basal plane.
• Observed the dispersion of plasma-treated GnP in solvents to evaluate surface wettability.

Main Results:

• Successfully modified the surface of graphite nanoplatelets (GnP) using low-temperature atmospheric plasma.
• Demonstrated that plasma treatment did not significantly alter the intrinsic structure of GnP.
• Showcased tunable immersion characteristics and tailored surface functional groups on C4F8 plasma-treated GnP.

Conclusions:

• Atmospheric plasma processing is a viable technique for surface modification of graphite nanoplatelets (GnP).
• The C4F8 plasma treatment allows for controlled tuning of surface chemistry and functional groups.
• This surface functionalization capability is essential for developing high-performance graphene-containing composite materials.