Molecular Bonding Mechanism for Solid Adhesion

Abstract The purpose of this study is to understand why and how solids can be bonded together with and without an adhesive. Beside van der Waals interactions and chemical bonding, there are some intermediate interactions, such as the Coulombic and charge-transfer interactions. These interactions are also called molecular interactions. Thus, molecular bonding mechanism for solids deals mainly with the formation of an adhesive bond through molecular interactions. The driving forces for molecular interactions are discussed in terms of adhesive energy and separation distance. The functions of electrons are illustrated with molecular orbitals. Moreover, some unique interactions between a molecule and the surface of a solid are demonstrated with the results found by Hoffmann.