Fig. 9From: A novel polymeric fluorescent brightener agent based on 4,4′-diamino-stilbene-2,2′-disulfonic acid-triazine structure: synthesis, characterization, photo-property, and performance on paper as light stabilizer, fluorescent brightener, and surface-sizing agentSurface strength curve of surface-sized paper sheets (concentrations are 0, 0.2, 0.4, 0.6, 0.8 wt%, respectively)Back to article page