These compatibilizers reside at the interface between both polymers and reduce their interfacial tension
, The compatibilizing effect of EOC can be seen in Figs.
For surface properties: sweet almond oil / whey, all interfacial tensions
are lower than that found obtained for sweet almond oil/water is 45 Dynes/cm whose the values of the interfacial tension
varies from one whey to another: 35.
Upon simple dilution with water, a translucent microemulsion-like phase with ultra-low interfacial tension
is passed in which the phase inversion from water/oil to oil/water occurs.
Surface tension measurement: The interfacial tension
between various surfactant solutions and crude oil were measured with rising drop method.
1 Influence of contact time on dynamic interfacial tension
For example, it is commonly accepted that high viscosity of the matrix, low interfacial tension
and high shear rate enhance the deformation and break-up of the dispersed droplets.
wo] are the interfacial tension
between solid/oil, solid/water and water/oil, respectively.
The interfacial tension
of PVA solution effectively decreased to 43 dyne/cm when the concentration increased to 0.
In turn, the morphology is influenced by the following hierarchy of factors: interfacial tension
>viscosity ratio >shear stress.
where [theta] is the contact angle determined for test liquids, subscripts "Iv" and "sv" denote the liquid--vapor and surface--vapor interfacial tension
, respectively, whereas superscripts "p" and "d" denote the polar and disperse components, respectively, of total surface tension, [gamma].
Generally, the morphologies of polymer blends relate to the interfacial tension
between the matrix and dispersed phase.
In addition, differences in the structures of polymers typically lead to thermodynamic incompatibility between them, which highlight the role of interfacial tension
on the properties of the final blends (7).