If the incorrect melting mechanism is assumed when deriving a PSD ( pore size distribution ) there will be " at least " a 100 % error in the PSD . Moreover, it has been shown that advanced melting effects can lead to a dramatic skew towards smaller pores in PSDs for mesoporous sol-gel silicas, determined from cryoporometry melting curves.
22.
Thus, if the elasticity is inferred from the measurements of the scattering intensity, and the viscosity is determined independently ( via mechanical methods such as ultrasonic attenuation ) measurement of the relaxation rate yields information on the pore size distribution contained within the polymer network, " e . g " large fluctuations in polymer density near the critical point yield large density differentials with a corresponding bimodal distribution of porosity.
23.
Therein ? w is density of water and V w is volume of water imbibed, ? o is density of oil and V o is volume of oil imbibed, the amount of water imbibed and amount of oil imbibed under gravity are same; and air behaves as a strong non-wetting phase in both an oil / air / solid and a water / air / solid systems, thereby indicating that both oil and water behave as strong wetting phases, resulting in equal air / oil and air / water capillary forces for the same porous media and for a given pore size distribution.
