Role of Hydrogen-Bonding and OH-π Interactions in the Adhesion of Epoxy Resin on Hydrophilic Surfaces.

ABSTRACT: Epoxy resin adhesives are widely used for joining metal alloys in various industrial fields. To elucidate the adhesion mechanism microscopically, we investigated the interfacial interactions of epoxy resin with hydroxylated silica (0 0 1) and γ-alumina (0 0 1) surfaces using periodic density functional theory calculations as well as density of states (DOS) and crystal orbital Hamilton population (COHP) analyses. To better understand the interfacial interactions, we employed and analyzed water and benzene molecules as hydrophilic and hydrophobic adsorbates, respectively. Structural features and calculated adhesion energies reveal that these small adsorbates have a higher affinity for the γ-alumina surface than that for the silica surface, while a fragmentary model for the epoxy resin exhibi

SUBMITTER: Nakamura S 

PROVIDER: S-EPMC7557942 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature