Fig. 8From: 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 agentScanning electron microscope (SEM) images of surfaces of paper sheet and surface-sized paper sheet. Scale bars: S4800 3.0 kV 8.5 mm × 1.00 k SE (M)Back to article page