Paper chromatography appears to be similar to thin layer chromatography (TLC) that you are already familiar with from a previous experiment. There are some similarities, but there are also important differences. The cellulose that paper is composed of is a linear polymer of glucose with 1,4-glycosidic linkages (Chart S-1). As such, it provides a fairly polar surface similar to silica gel. A significant amount of water also adsorbs to the cellulose making the surface even