User:Benjah-bmm27/degree/2/JPR


 * Interface (chemistry)
 * Colloid
 * Surfactants
 * Detergency
 * Critical micelle concentration
 * Surface tension, Surface energy


 * Contact angle
 * if contact angle θ = 180°, liquid does not wet solid substrate
 * if contact angle θ = 0°, liquid perfectly wets the solid substrate and spreading occurs
 * if contact angle 0° < θ < 180°, liquid-substrate interface formed, liquid partially wets solid surface


 * Wetting


 * spreading coefficient:
 * $$\ S = \gamma \mbox{(water-vapour)} - \gamma \mbox{(oil-vapour)} - \gamma \mbox{(oil-water)} > 0$$


 * Young-Dupre equation:
 * $$ \cos{\theta} = \frac{ \gamma \mbox{(solid-vapour)} - \gamma \mbox{(solid-liquid)} }{ \gamma \mbox{(liquid-vapour)} }$$


 * Capillary rise:
 * $$h={2{ \gamma }\over{r \rho g}}$$
 * where:
 * $$\ h $$ = height of capillary rise
 * $$\ \gamma $$ = surface tension
 * $$\ r $$ = radius of the capillary
 * $$\ \rho $$ = density of liquid
 * $$\ g $$ = gravitational acceleration


 * Surface roughness


 * Adhesional wetting:


 * $$\ S = \gamma _ + \gamma _  - \gamma _  > 0$$


 * Immersion wetting:


 * $$\ S = \gamma _ - \gamma _  > 0$$


 * Critical radius
 * Emulsion
 * Bancroft rule: "The phase in which an emulsifier is more soluble constitutes the continuous phase"
 * Vapor pressure, Supersaturation, Nucleation


 * Kelvin equation:


 * $$\ln \frac = \frac$$