Atomic Force Microscopy of Industrial Polymers

Abstract

The performance of many industrial polymers is determined by the microscopic morphology of the polymers. For example, surface morphology can influence properties such as adhesion, friction, sealing, blocking, printability, wettability, and haze. Furthermore, bulk morphology often controls mechanical properties such as toughness. strength, wear, and tear resistance. In order to optimize polymer performance, quick reliable methods of determining surface and bulk morphology are essential.In the past, electron microscopy (in particular TEM) has been the primary method for determining polymer morphology. However, the usefulness of electron microscopy has been limited by the destructive nature of the electron beam, the naturally poor contrast between polymer types, and the difficulty in preparing (staining, etching, cryogenic ultramicrotoming, etc.) high quality specimens.Recently, the tapping phase-shift mode of atomic force microscopy (TPSAFM) has provided the polymer scientist with a simple, quick, flexible and quantitative method for determining polymer surface and bulk morphology.