▎ 摘　　要

NOVELTY - Combined production-functionalization process for manufacturing a chemically functionalized nano graphene material directly from a pristine graphite material, comprises: (a) dispersing pristine graphite material and an azide or bi-radical compound in a liquid medium to form a suspension; and (b) subjecting suspension to direct ultrasonication with ultrasonic waves of a desired intensity. USE - The combined production-functionalization process is useful for manufacturing chemically functionalized nano graphene material directly from pristine graphite material from graphitic material, or from pre-intercalated, oxidized, or halogenated graphite material (all claimed). ADVANTAGE - Concurrent production and functionalization of nano graphene platelets directly from pristine graphitic materials can be achieved in one step and in the same reactor. Additionally, the invention provides improved solubility of nano graphene platelets in a liquid medium, improved dispersibility of nano graphene platelets in a matrix material, and enhanced interfacial bonding between nano graphene platelets and matrix material in composite. DETAILED DESCRIPTION - Combined production-functionalization process for manufacturing a chemically functionalized nano graphene material directly from a pristine graphite material, comprises: (a) dispersing pristine graphite material and an azide or bi-radical compound in a liquid medium to form a suspension; and (b) subjecting suspension to direct ultrasonication with ultrasonic waves of a desired intensity for a length of time sufficient to produce nano graphene platelets and to enable a chemical reaction to occur between the nano graphene platelets and the azide or bi-radical compound to produce the functionalized nano graphene material. INDEPENDENT CLAIMS are: (1) a combined production-functionalization process for producing a chemically functionalized nano graphene material from a pre-intercalated, oxidized, or halogenated graphite material, comprising: (a) producing exfoliated graphite from the pre-intercalated, oxidized, or halogenated graphite material; (b) dispersing the exfoliated graphite and an azide or bi-radical compound in a liquid medium to form a suspension; and (c) subjecting the suspension to ultrasonication with ultrasonic waves of a desired intensity for a length of time sufficient to produce nano graphene platelets and to enable a chemical reaction to occur between the nano graphene platelets and the azide or bi-radical compound to produce the functionalized nano graphene material; or a combined production-functionalization process for producing a chemically functionalized nano graphene material from a pre-intercalated, oxidized, or halogenated graphite material, comprising: (a) dispersing the pre-intercalated, oxidized, or halogenated graphite material and an azide or bi-radical compound in a liquid medium to form a suspension; and (c) subjecting the suspension to ultrasonication with ultrasonic waves of a desired intensity for a length of time sufficient to produce nano graphene platelets and to enable a chemical reaction to occur between the nano graphene platelets and the azide or bi-radical compound to produce the functionalized nano graphene material; (2) a process for producing a chemically functionalized nano graphene material comprising mixing a starting nano graphene material having edges and two primary graphene surfaces, an azide or bi-radical compound, and an organic solvent in a reactor; and allowing a chemical reaction between the nano graphene material and the azide compound to proceed at a temperature for a length of time sufficient to produce the functionalized nano graphene material; and (3) a combined production-functionalization process for manufacturing a chemically functionalized nano graphene material from a graphitic material, comprising: (a) Dispersing the graphitic material and a bi-functional or multi-functional compound in a liquid medium to form a suspension; and (b) Subjecting the suspension to direct ultrasonication with ultrasonic waves of a desired intensity for a length of time sufficient to produce nano graphene platelets and to enable a chemical reaction to occur between the nano graphene platelets and the compound to produce the functionalized nano graphene material.