摘要
活性染料染色中存在的盐污染问题一直是困扰染整工作者的难题,棉纤维阳离子化是解决此问题的一条有效途径,但分析研究表明,小分子阳离子化试剂具有利用率低,排放造成环境污染,影响纤维强度等缺点,而高分子阳离子化试剂不利于染料的渗透,阻碍染料与纤维的结合,影响纤维的服用性能等,所以大分子试剂的开发引起关注,人们试图通过大分子试剂的应用克服上述缺点,虽然从理论上分析,大分子阳离子化试剂具有优越性,而且目前应用已取得了一定的进展,但对于大分子分子量,分子结构等对棉纤维改性及染色等方面的影响还有待进一步系统地研究。
Cationization of cotton fibers is an effective way to solve the problem of salt pollution in dyeing of reactive dyes. Previous studies showed that cationic agents with small molecular weight presented low utilization which caused environmental pollution when the agents were released. Moreover, the tensile strength of the pretreated fibers was usually decreased. Other researches focused on eationization of the fibers with polymeric agents, but the pretreatment prevented the reactive dyes from penetrating into the fibers and affected their reac- tion with the fibers, which also influenced the wearability of the cotton fabrics. Cationic macromolecular agents were then synthesized and used to conquer the shortcomings of both small molecular agents and polymeric ones. Although these agents exhibited superior properties from the theoretical analysis and some progress has been made in the studies, systematical research should be further studied on both the cationization and dyeing processes from the molecular weight, the structure, etc. of the cationic macromolecular agents.
出处
《染料与染色》
CAS
2008年第5期44-46,共3页
Dyestuffs and Coloration
关键词
阳离子型大分子
活性染料
无盐染色
cationic macromolecules
reactive dyes
salt- free dyeing
