Study of Adhesion Properties of Polypropylene Surfaces by Atomic Force Microscopy Using Chemically Modified Tips : Imaging of Functional Group Distribution

摘要: Polypropylene surfaces were investigated by atomic force microscopy (AFM) using chemically modified probes. We show in this contribution that it is possible to locally detect additives on the surface of polypropylene, tips with methyl and hydroxyl terminated self-assembled alkanethiol monolayers. The response pure towards chemical probes, medium wherein measurements are realized (water or nitrogen atmosphere), determined order be able further recognize localize these compounds polymer surfaces. pull-off have shown discriminate between antioxidants, which a hydrophobic behaviour, UV-light stabilizers, more hydrophilic behaviour. Similarly we measured forces melt-pressed polypropylene sample stabilized two antioxidants one stabilizer. These adhesion extreme presents behaviour mainly composed an stabilizer layer. obtain maps showing distribution surface.