SYNTHESIS AND CHARACTERIZATION OF FLUORESCENT WOOD PULP CELLULOSE DERIVATIVE BASED ON SCHIFF BASE REACTION

摘要

The study investigated the effects of different oxidant/cellulose mass ratio on dialdehyde cellulose (DAC) and corresponding cellulose Schiff's base (CSB) with fluorescence. Three DACs were synthesized first from hydrolyzed wood pulp cellulose under 45 degrees C, and then reacted with 2-methyl-4-nitroaniline (MNA). The morphology, structure, thermal and fluorescence behaviors were characterized by a polarizing microscope, FT-IR, DSC and a fluorescence microscope. The results showed that the oxidant content is the key step to prepare wood pulp CSB. When the mass ratio is 0.5 and 1, the DAC and CSB can retain better rod morphology and thermal stability because the reaction mainly occurs in the amorphous region of the cellulose surface.