In chapter 4, the functional groups, amino, carboxyl, isocyanate and N-chloroamide group, formed in the Hofmann reaction of polyacrylamide (PAM) were characterized by means of colloidal titration, IR and XPS spectra.
第四章用碘量法、胶体滴定法、红外光谱法和X&射线光电子能谱法分析聚丙烯酰胺的Hofmann反应中的功能基团，特别是异氰酸酯基和副产物聚胺酯变化的结果。