Novel chitosan-ZnO based nanocomposites as luminescent tags for cellulosic materials

作者：Saeed Saeed El Sayed^*; El Molla Mohamed M; Hassan Mohammad L; Bakir Esam; Abdel Mottaleb Mohamed M S; Abdel Mottaleb Mohamed S A

来源：Carbohydrate Polymers, 2014, 99: 817-824.

DOI：10.1016/j.carbpol.2013.08.096

• Luminescent tags
• Security features
• Eu3+ doped chitosan-ZnO
• Nanocomposites
• Quantumdots
• Cellulose

Novel chitosan-ZnO composites have been synthesized as luminescent taggants for cellulosic materials. The synthesized chitosan-ZnO nanospheres (CS-ZnO NS), chitosan-ZnO-oleic acid quantum dots (CS-ZnO-oleic QD) and chitosan-ZnO-oleic acid:Eu3+ doped nanorods (CS-ZnO-oleic:Eu3+ NR) were characterized by X-ray diffraction, photoluminescence spectroscopy, FTIR spectroscopy and transmission electron microscopy. The prepared luminescent CS-ZnO composites were used in printing paste and applied to different types of papers and textiles by using screen printing technique. The calorimetric values of the printed CS-ZnO-oleic acid and CS-ZnO-oleic:Eu3+ showed that printing caused slightly change in color values. Scanning electron microscopy images and color values of the printed surface showed that CS-ZnO-oleic QD and highly luminescence CS-ZnO-olic:Eu3+ NR are suitable for use as a printed security feature.

• 出版日期2014-1-2