The high polarity of the liquid phase in these formulations is probably responsible of this behavior: because of the liquid phase good compatibility with PVA, the introduction of a less polar additive (PEO) does not interfere with the interactions controlling the liquid retention.
Continuous thermodynamics the use of probability density functions rather than discrete components to represent composition is applied as the mixture model, and continuous mixture formulations of the liquid phase transport equations and diffusivities are developed.
The advective dispersive mass balance formulation allows for mobile immobile liquid phase and vapor diffusive mass transfer, with linear equilibrium adsorption and liquid vapor phase partitioning in the dynamic and stagnant soil regions.
In Figure 4 the mechanical spectra of two formulations with different composition of liquid phase are shown and it is evident that dispersions containing acetone display much stronger elastic behavior than formulations with water only.
Previously, we introduced a one-step nano-extrusion (NANEX) process for transferring aqueous nano-suspensions into solid formulations directly in the liquid phase.
The microscopic model is written in terms of the phase formulation, i.e. the liquid saturation phase and the gas pressure phase are primary unknowns.
For such tests a gel with 1% of PEO was preferred on the basis of the evaporation measurements which showed for this formulation the highest capability to retain liquid phase.
As shown in Figure 2 in the formulations with water and water/2-propanol mixtures the retention of liquid phase is not affected by the PEO content.
Liquid phase saturation, %.
