By means of chemical analysis and IR spectrum,the catalyzing mechanism of SN was suggested that as a nucleophilic reagent,SN reacts with carboxyl groups in BTCA,which is favorable for froming anh...

• 结合化学和红外吸收光谱的分析,提出硝酸钠的催化机理为:硝酸根作为亲核试剂,与BTCA中的羧基发生亲核取代,促进BTCA脱水成酐,进而与纤维素酯化交联。