Contact Area Distribution During PVA Brush Scrubbing

摘要

Understanding the contact area distribution during brush scrubbing is important in order to better design the optimal shape of brushes. In this study, we visualized the contact area distribution of polyvinyl alcohol (PVA) brushes on a prism surface via the total reflection method. Brush deformation during scrubbing is also discussed in this study. Results show that the nodule side face, rather than the bottom face, mainly contacted the surface. In addition, we observed that the rotational speed range of stick-slip phenomena occurrence depended on the wettability of the prism.