Rheology

Preparation and Characterization of Three Dimensional Graphene

Three dimensional (3D) graphene has applications as adsorbents as well as electrodes for capacitive deionisation. It is formed by reduction of graphene oxide where three dimensional structure is formed by self-assembly of reduced graphene sheets. In this work, the following aspects will be studied: 

(i) dynamics of formation of 3D graphene from graphene oxide

(ii) shape and surface area of the resulting structure

(iii) strength of the 3D graphene network 

(iv) incorporation of silver nanoparticles for applications such as disinfection of water

Simulating the Dynamics of Particulate Networks

Crude oil is a naturally occurring complex fluid with interesting flow characteristics. For example, crystallisation of high molecular weight hydrocarbons (waxes) occurs at low temperatures. When this happens, and if the particles are large enough in number, they deposit on the walls, slowly blocking the pipeline. This may sometimes also happen suddenly during shut-downs and if not managed properly, the pipeline may need to be abandoned. Prevention and management of blockage is thus a crucial problem for the petroleum industry.