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Graphene Oxide functionalized with POSS for improving the toughness of composites

Graphene Oxide functionalized with POSS  for improving the toughness of composites

Name:
Muthusubramanian Mohan

Department:
Material Science and Engineering

Abstract:
Graphene based polymer nanocomposites have drawn widespread interests because of the significant properties achieved at very low filler concentrations. However, graphene based materials tend to get restacked and aggregated in polymer matrices at higher filler loadings. Hence proper dispersion of graphene material in the polymer matrix plays a crucial role in achieving the desired properties. In order to overcome this problem, we have studied a novel Graphene oxide - Polyhedral Oligomeric silesquioxanes nanofillers system (POSS). In which POSS nanoparticles are reacted to both the basal and end functional groups of graphene oxide. The heavy cage like structured POSS moieties keeps the graphene oxide exfoliated and prevents the restacking of layers. The prepared Graphene-POSS hydrid nanofillers system is incorporated in the epoxy matrix and its effect on fracture toughness property is studied.