This project aims to have a molecular-level understanding of surface chemistry on mineral materials in the presence of solvent, water, bitumen and surfactants. We will carry out initial experiments on a flat silica surface in order to study the interfacial water structures, the competition adsorption and the factors determining the wettability of the surface. The surface chemical composition will be characterized using sum frequency generation (SFG) vibrational spectroscopy. We will compare the microscopic information obtained in the SFG studies with the contact angle measurements in order to establish a link between the microscopic and macroscopic phenomena.
Principal Investigator(s): Keng Chou and Murray Gray
Research Team: Zheng Yang, Gwen Bailey, and Qifeng Li
Project Number: COSI 2009-02
Projected Completion Date: March 31, 201