Fluids, Gels and Glasses Under Extreme Conditions of Pressure and Temperature
Abstract
The NMR and Raman techniques were used to investigate the hydrolysis and condensation mechanism in B2O3-SiO2; A1203-SiO2; and Na2O-Al2O3-SiO2 systems. The solid state NMR techniques were employed together with BET methods to follow the thermal treatment of the gels. In addition to the NMR and Raman techniques, the SANS method was employed to study the effects of fluoride anion catalyst on the sol-gel process involving TMOS. High pressure NMR studies of the dynamic structure of the highly viscous liquids focused on three projects: i) The self-diffusion behavior, and the applicability of hydrodynamic equations at the molecular level for a model lubricant - 2-ethylhexylbenzoate; ii) The effect of the dipole moment on the hydrodynamic behavior of highly polar fluids; iii) The effect of molecular flexibility on the relationship between molecular properties and shear viscosity at extreme conditions of pressure. Boron oxides, Silicon dioxide, Sol gel process, Viscous liquids, Raman, High pressure, Structure property relationship, Aluminum oxide, Sodium oxide.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 17, 1989
- Accession Number
- ADA205292
Entities
People
- Jiri Jonas
Organizations
- University of Illinois Urbana–Champaign