Diffusion/adsorption behaviour of reactive dyes in cellulose
Diffusion/adsorption behaviour of reactive dyes in cellulose
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DOI：
10.1016/s0143-7208(96)00080-0
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发表时间：
1997-08-01
影响因子：
4.5
通讯作者：
Morita, Z
中科院分区：
文献类型：
--
作者：
Bae, SH;Motomura, H;Morita, Z
本文研究了两种对纤维素具有高亲染性的一氯三嗪（MT）活性染料在80 ℃、宽浓度范围的硫酸钠染浴中在纤维素膜中的扩散/吸附行为。这些活性染料的扩散系数表现出较大的浓度依赖性在低盐浓度和较小的依赖性与盐浓度的增加。纤维素中活性染料的扩散系数或扩散行为的浓度依赖性与直接染料基本相同。从所获得的结果中的染料在纤维素中的扩散/吸附行为可以解释由可变孔隙率模型在低浓度范围内的染料。在高盐浓度下，染料在纤维素中的扩散系数随染料浓度的增加而增大，此时染料在纤维素中的吸附达到饱和。(C)1997年爱思唯尔科学有限公司
The diffusion/adsorption behaviour in cellulose films of two monochlorotriazinyl (MT) reactive dyes having high substantivity to cellulose was investigated from the dyebath using a wide concentration range of sodium sulphate at 80 degrees C. Diffusion coefficients for these reactive dyes showed a large concentration dependence at low salt concentration and a smaller dependence with an increase in salt concentration. The concentration dependence of the diffusion coefficient or of the diffusion behaviour for reactive dyes in cellulose was essentially the same as that for direct dyes. From the results obtained the diffusion/adsorption behaviour of reactive dyes in cellulose could be explained by a variable porosity model in the low concentration range of the dyes. In the case of high salt concentration, the diffusion coefficients in cellulose increased with increasing dye concentration at which the saturated adsorption appeared. (C) 1997 Elsevier Science Ltd.