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Energy and Environment Directorate

Research Capabilities

Interfacial Science and Rheology

The Interfacial Science and Rheology team in the Radiological Materials and Technology Development group understands and controls chemical and mechanical behaviors at solid-liquid interfaces in multi-phase material systems, e.g., nuclear waste process slurries. The team utilizes rheometers, particle size distribution, zeta potential, and other characterization tools to evaluate multi-phase materials and develop simulants with representative physico-chemical properties. Simulants are surrogates for actual materials that pose unusual handling risks in a standard laboratory and/or are not readily available in sufficient quantity for process testing, especially as the process scale is increased. While multi-phase solid-liquid systems are a specialty, single-phase systems, such as non-radioactive liquid chemical simulants, are also developed and tested. Further, the IS&R team is active in applying these types of materials to the development and enhancement of various chemical process technologies. To this end, the team consists of a number of chemical and materials engineers and scientists and highly experienced, senior technicians.

Developing and understanding IS&R

Developing and applying understanding of Interfacial Science and Rheology to multiphase materials

Energy and Environment

Core Research Areas