Surface and Interface Properties of Crosslinked Amine-Cured Epoxies

Published

February 19, 2017

Author(s)

Tinh Nguyen, G Xiaohong, M Giraud, Mark R. VanLandingham, Jonathan W. Martin

Abstract

The surface and film/substrate interface properties of a coating system have a strong influence on its adhesion and durability. However, both the surface and interface chemical composition and microstructure of a crosslinked coating applied to a substrate are affected by the surrounding environments and processing conditions. For example, it has been well established that the air surface of a multicomponent polymer system is enriched with a thin layer of a lower surface-free energy material. Such surface enrichment would generate a surface morphology and chemical composition that are different from that in the bulk or at the film/substrate interface. Similarly, the buried interface/interphase between a coating and a substrate is often affected by processing conditions that control chemical kinetics, diffusion, and volumetric changes. In addition, the interface region often includes preferentially adsorbed species and additives. The resulting interface/interphase is often a very complex structure, which is not easily analyzed or modeled. This study investigates the effects of crosslink density and epoxy resin molecular mass on the surface-free energies and morphology of the surface and the film/substrate interface of crosslinked amine-cured epoxies.

Citation

American Chemical Society Meeting

Pub Type

Journals

Keywords

AFM, Building Technology, coatings, crosslink density, epoxy, interface, surface, surface-free energy

Citation

Nguyen, T. , Xiaohong, G. , Giraud, M. , VanLandingham, M. and Martin, J. (2017), Surface and Interface Properties of Crosslinked Amine-Cured Epoxies, American Chemical Society Meeting (Accessed December 3, 2024)