A

Adhesive Forces

W_adhesion = γ_A + γ_B − γ_AB
Quick Reference
Formula / NotationW_adhesion = γ_A + γ_B − γ_AB
Also Known AsAdhesion forces; intermolecular adhesion; wetting forces

What is Adhesive Forces?

Adhesive forces are attractive forces between molecules of different substances. They are responsible for the adhesion of a liquid to a solid surface and for phenomena such as capillary action (when adhesion > cohesion), wetting of surfaces, and the meniscus shape in a glass tube. Adhesive forces involve intermolecular forces including van der Waals forces, hydrogen bonds, and electrostatic interactions.

Formula & Notation

W_adhesion = γ_A + γ_B − γ_AB

Other Names / Synonyms: Adhesion forces; intermolecular adhesion; wetting forces

Properties & Characteristics

Forces between unlike molecules; responsible for wetting, capillary rise, and meniscus formation (concave when adhesion > cohesion); measured by contact angle θ (θ < 90° for wetting surfaces); adhesion work = γ_A + γ_B − γ_AB

Uses & Applications

Adhesives and glues technology; coating and painting (surface wettability); capillary electrophoresis; understanding liquid behaviour in narrow tubes and porous materials; ink and dye adsorption onto fabrics

Safety Information

No direct hazard from the concept itself. Adhesive products (glues, solvents) may be flammable, irritating, or toxic; always consult SDS for specific adhesive products.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Adhesive Forces
Formula W_adhesion = γ_A + γ_B − γ_AB
Synonyms Adhesion forces; intermolecular adhesion; wetting forces

Frequently Asked Questions

Adhesive forces are attractive forces between molecules of different substances. They are responsible for the adhesion of a liquid to a solid surface and for phenomena such as capillary action (when adhesion > cohesion), wetting of surfaces, and the meniscus shape in a glass tube. Adhesive forces involve intermolecular forces including van der Waals forces, hydrogen bonds, and electrostatic interactions.

More "A" Terms

View all "A" terms →
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z