聚乙烯吡咯烷酮对还原染料染色的缓染作用  

Retardation of polyvinylpyrrolidone in vat dyeing

作　　者：李伟[1] 赵涛[1] 

机构地区：[1]生态纺织教育部重点试验室东华大学化学化工与生物工程学院,上海201620

出　　处：《印染》2009年第16期9-12,共4页China Dyeing and Finishing

摘　　要：采用可见分光光度法和粒度测试,研究聚乙烯吡咯烷酮(PVP)与还原染料隐色体的相互作用,分析了PVP k-30质量浓度对棉织物还原染料染色性能的影响。结果表明,PVP可与还原染料隐色体形成强的络合体,使染料隐色体的吸收光谱发生红移,并产生增色效应;PVP可有效阻止还原染料对棉织物上染,具有很强的缓染作用,能改善染色织物的匀染性,且缓染作用的程度取决于PVP的质量浓度。Interaction between polyvinylpyrrolidone （PVP） and vat leuco dyes was studied using visible spectrophotometric methods and particle size determination. The influence of the amount of PVP on the dyeing behavior with vat leuco dyes was analyzed. Results showed that PVP can react with the vat leuco dyes to form certain complexes,which could lead to red shift of the absorption spectra and hyperchromic effect. PVP could effectively retard the dye uptake rate and assist the leveling fabric dyeing. The retarding or leveling effect was proportional to the amount of PVP added in the dyebath.

关 键 词：染色 还原染料 棉织物 

分 类 号：TS193.633[轻工技术与工程—纺织化学与染整工程]