Increasing the Dissolution Rate of Polystyrene Waste in Solvent-Based Recycling.

Solvent-based recycling of plastic waste is a promising approach for cleaning polymer chains without breaking them. However, the time required to actually dissolve the polymer in a lab environment can take hours. Different factors play a role in polymer dissolution, including temperature, turbulence, and solvent properties.

Properties of pellets of torrefied U.S. waste blends.

With the continued growing U.S. population, solid waste generation will increase, which will lead to undesired and significant growth in landfilling.

Gate-voltage control of oxygen diffusion on graphene.

We analyze the diffusion of oxygen atoms on graphene and its dependence on the carrier density controlled by a gate voltage. We use density functional theory to determine the equilibrium adsorption sites, the transition state, and the attempt frequency for different carrier densities. The ease of diffusion is strongly dependent on carrier density.