【摘要】 通过在碱性条件下K型活性艳红(K-2BP)与具有两性聚电解质性质的N,O-羧甲基壳聚糖的反应制得了新型水溶性高分子染料。FT-IR和1H-NM R的表征表明,染料分子接枝到了N,O-羧甲基壳聚糖的骨架上。通过可见光分光光度法测定了K-2BP在0.1 m o l/L N a2CO3-0.1 m o l/L N aHCO3缓冲溶液中的最大吸收波长为526 nm,摩尔消光系数ε=18918.0 L/(m o l.cm),并以此为基础确定了K-2BP型高分子染料的接枝度为1∶10.4。更多还原

【Abstract】 In this paper, a new kind of water soluble polymer dye was prepared through reaction of reactive Brilliant Red K-2BP with N,O-carboxymethyl chitosan in the alkaline condition. It was demonstrated that the dye was grafted onto the chain of N,O-carboxymethyl chitosan through the results of FT-IR and （）¹H-NMR. It is detected that the maximum absorbing wavelength and the molar absorptivity ε of K-2BP in the （0.1） mol/L Na₂CO₃-（0.1） mol/L NaHCO₃ buffer solution is 526 nm and （18918.0） L/mol·cm respectively. Then it can be calculated that the grafting degree of reactive Brilliant Red K-2BP on the chain of the N,O-carboxymethyl chitosan is 1∶（10.4）.更多还原