title: Water proton relaxation in dilute and unsaturated suspensions of non-porous particles.
abstract: NMR water proton relaxation times are reported for suspensions of silica powder of varying silica/water ratios. Pore size distributions and pore connectivities are derived from the relaxation time distributions for the water-saturated suspension. Capillary theory appears to explain the relaxation behaviour of the unsaturated, packed suspensions. The relaxation data in suspensions that have lower solid/liquid ratios than the saturated, packed suspension are sensitive to the particular radial distribution function. This is analysed with a simple cluster model.
authors.affiliation: AFRC Institute of Food Research, Norwich Laboratory, Colney, UK.
authors.forename: B P
authors.initials: BP
authors.lastname: Hills
mesh_terms: D002197:Capillary Action; D009682:Magnetic Resonance Spectroscopy; D016062:Porosity; D012822:Silicon Dioxide; D013535:Suspensions; D014867:Water
chemical_list: D013535:Suspensions; D014867:Water; D012822:Silicon Dioxide