木质素磺酸及其衍生物红外光谱研究

Infrared Spectroscopic Study on Lignosulfonic Acid and Its Derivatives

对木质素磺酸、酚化木质素磺酸及环氧化木质素磺酸的红外光谱进行比较，并分析得到谱图中出现的位于1145cm－1、1043cm－1、834cm－1、757cm－1和693cm－1附近的红外峰的归属。结果表明这些峰与横酸基团和苯环取代结构密切相关，而且，酚化反应中木质素横酸的酚化程度和产物的取代本环结构可由木质素磺酸及其酚化产物的红外光谱图的变化得到定性反映。

Infrared (IR) spectra of lignosulfonic acid, its phenolizational products,its epoxidizational products and some important IR bands were discussed.The results showed that bands around 1145 cm-1 in the spectra of lignosulfonic acid and its derivatives related clooely to sulfonate groups,and bands around 834 cm-1, 757 cm-1 and 693 cm-1 could be ascribed to the out-of-plane vibrations of substituted benzene rings in the structure of the phenolized lignosulfonic acid.According to these bands,the extent and type of the phenolization could be primarily judged.