interfacial adhesion

Adhesion in which interfaces between phases or components are maintained by intermolecular forces, chain entanglements, or both, across the interfaces.

Notes:

Interfacial adhesion is also referred to as tack.
Adhesive strength (recommended symbol: $F a$ , unit: $N m −2$ ) is the force required to separate one condensed phase domain from another at the interface between the two phase domains divided by the area of the interface.
Interfacial tension (recommended symbol: $γ$ , unit: $N m −1$ , $J m −2$ ) is the change in Gibbs energy per unit change in interfacial area for substances in physical contact.
Use of the term interfacial energy for interfacial tension is not recommended.

Source:

PAC, 2004, 76, 1985 (Definition of terms related to polymer blends, composites, and multiphase polymeric materials (IUPAC Recommendations 2004)) on page 1992