UV/Visible spectroscopic studies of the effects of common salt and urea upon reactive dye solutions

被引：76

作者：

Hamlin, JD

Phillips, DAS

Whiting, A

机构：

[1] UMIST, Dept Chem, Manchester M60 1QD, Lancs, England

[2] UMIST, Dept Text, Manchester M60 1QD, Lancs, England

来源：

DYES AND PIGMENTS | 1999年 / 41卷 / 1-2期

关键词：

D O I：

10.1016/S0143-7208(98)00076-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The absorption spectra of two reactive dyes were studied by UV/Visible spectrophotometry in the presence of sodium chloride and urea at varying concentrations. Evidence has been produced to show that the effect of adding common salt to a dyebath at neutral pH is to produce increased aggregation of the dye species. In contrast, the addition of urea to a dye liquor results in reduced dye aggregation and the generation of increased amounts of the monomeric species. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：137 / 142

页数：6

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