Graphene

GrapheneA preview powering the futureScholarship Holder :Senior Researcher :

27 July 2015

Tittys PresentationGraphite, the starting material

Which mesh is adequate to modified hummers method?100 mesh?200 mesh?50 mesh?Which companies can send me free samples?

Asbury (USA) Qingdao Sungraf Chemical Industries (China)Guangzhou leisidum Electricals (China)Juqeew Co. Ltd (Russia)Gotani (Germany)

Graphite, choosing the right raw materialAnalytical methods

XRDTEMFTIRChoosing the right material required some knowledge about

Handling and weighing Grain sizeYield of exfoliation processPurity (Thrusted the providers information)Carbon content (Thrusted the providers information)

ASBURY100 MESHGraphite, the starting material

Modified Hummers Method conc. H2SO4 and KMnO4Reduction Method developed in the house!

a Graphiteb GOc r-GOXRD and FTIR analysis

a)b)c)d)a)b)c)a) Graphite b) GO c) Sonicated GO d) r-GOWhy reduced graphene oxide?Less oxygen within reaction environment

Less scavenger used (MAO)

Less probability of catalyst poisoning

Higher polymerization ratio with grafted allylic chains

Reduction process increase the exfoliation yieldNevertheless .

How can reduced graphene oxide influence the polymers mechanochemical response?