yt och kolloid kemi

Jag hänger inte med i texten nedan:

The highest interfacial
tensions are seen for mixtures containing water
with very hydrophobic compounds (hydrocarbons
and even more fluorocarbons). When enhanced interactions,
e.g. for water–aromatic hydrocarbons, result
in higher miscibility, then the liquid–liquid interfacial
tension is also higher. Of course, the intermolecular
forces, which are forces between molecules due to
their nature and position (potential energy), depend
on temperature, directly and indirectly as they are
competing with the kinetic energy of molecules
(which is proportional to kBT).

Om interfacial tension både består av cohesive forces mellan molekyler i samma ämne och, och främst, adhesive forces mellan de olika ämnena man blandar:

"Adhesive forces are the attractive forces between unlike molecules. They are caused by forces acting between two substances, such as mechanical forces (sticking together) and electrostatic forces (attraction due to opposing charges).

Cohesive forces are the intermolecular forces (such as those from hydrogen bonding and Van der Waals forces) which cause a tendency in liquids to resist separation. These attractive forces exist between molecules of the same substance."

Jag tolkar den första form av kraft som att adhesive forces är attraherande - sticka ihop och "+ gillar -" krafter.

Men kan detta också vara repulsiva krafter?

(apropå texten som säger att högst interfacial tension är mellan vatten och hydroFOBA - alltså inte hydrofila som attraheras till vattnet (eller?) - ämnen)