Wetting behavior homogeneous

The wetting behavior of poly(dimethylsiloxane) (PDMS) ionomers on a silica surface was investigated. Spin-cast films of Li-salts of a carboxylated PDMS (Li-CPDMS) on silica resisted dewetting even after annealing at 120 Z for 144 h, while the unmodified PDMS did not even form a homogeneous film. 

Furthermore, (5.13) collapses to the homogeneous (5.4) when 7=0. These observations reveal that the parameter p. of (5.11) can be interpreted in terms of the heterogeneity of the process. For example, an S -shaped dissolution curve with /a > 1 in (5.11) for an immediate release formulation can now be interpreted as a heterogeneous dissolution process (with 7 < 0 in equation 5.13), whose rate increases with time during the upwards, concave initial limb of the curve and decreases after the point of inflection. This kind of behavior can be associated with an initial poor deaggregation or poor wetting. 

The fonnation of wetting layers in mercury vapor is one example of heterogeneous behavior that is strongly influenced by the liquid-vapor critical point and the MNM transition. Another is the formation of dense liquid droplets in supersaturated metal vapor. The gradual size-dependent transition to metallic properties of isolated metal clusters (described in Sec. 4.7 for mercury clusters) should play an important role in the kinetics of the vapor-liquid phase transition of metals. As droplets grow during homogeneous nucleation in a supersaturated metal vapor, the MNM transition must affect the interparticle interactions. 

The pathway of induction means that electric energy is applied to create a magnetic field in the fluidization chamber the magnetic field, in turn, creates an electric current in large and inert metallic particles, which are co-fluidized with the product. The energy of this electric current is immediately dissipated as heat Such heat is transferred to the fluidization gas and then from the gas to the particles of the product to be dried alternatively, it may be transmitted directly to the product particles by contact (by collisions between inert and product particles). In order for this process to function, the inert metallic particles and wet product particles must fluidize in a rather homogeneous fashion - that is, their fluidization properties must match. The Archimedes number (see Eq. 4.3) shows that fluidization behavior depends on both the diameter and density of particles consequenfly, compact metallic particles will never have the same fluidization behavior as would, for example, food particles, unless they are much smaller. However, as it is... 

MD simulations of the wetting of hydrophobic substrates with surface inhomogeneities displayed a similar behavior as hydrophobic rough surfaces, with high contact angles (>130° for fluid comprised of "small-chain" molecules). Upon application of a lateral push, the droplet detached from the surface, akin to the lotus effect but at the nanoscale. This was not observed with the simulations with a homogenous surface. 

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