不同结构阳离子活化剂对棉织物双氧水漂白的影响

Different structure of cationic activators and their impact on cellulose peroxide bleaching

通过有效氧滴定、分解率和白度测试评价5种不同结构的阳离子型漂白活化剂的水解稳定性能.结果表明,在碱性条件下,每种内酰胺活化剂的活化分解率符合准一级反应动力学,分解率最慢和最快的分别为ω-辛内酰胺型漂白活化体系和δ-戊内酰胺型漂白活化体系.棉织物经漂白活化剂漂白后,白度显著提高.

The hydrolyzation stability of five cationic bleaching activators was evaluated through titration of available oxygen, decomposition rate and whiteness assessment. The results showed that the hydrolysis rate of various lactam activators followed pseudo first order kinetics under the alkaline condition, and the slowest and fastest hydrolysis rates of activators were the ω-octalactam and δ-valerotactam bleaching systems. The whiteness of bleached cotton fabrics were significantly improved by bleaching activators.