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Analysis of Dyeing Mechanism in Multiple Layrs Wool Fabric (Laminates) as Fiber Assembly Model

作为纤维组装模型的多层羊毛织物（层压品）染色机理分析

基本信息

批准号：
08680059
负责人：
SASAKI Hiroaki
金额：
$ 1.54万
依托单位：
Niigata Women's College
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

The sorption delay due to the diffusional boundary layr is inevitable in dyeing of fiber assembly. In the case of wool dyeing, the dyeing rate can be influenced by the mass-transfer process in the diffusional layr and the barrier such as an epicuticle. We measured the equilibrium dye uptake and the dyeing rate for a untreated wool fiber and a corona discharged wool fiber(sixteen-fold). The equilibrium dye uptake of the corona discharged wool fiber was the same as that of the untreated wool fiber. The dyeing rate of the corona discharged wool fiber was slightly larger than that of the untreated wool fiber. Wool fibers were treated with hydrophilic multifunctional epoxid(glycerol polyglycidyl ether-GPE). TEM observation results of the cross-sections the samples stained with AgNO_3 revealed that GPE were mainly accommodated in nonkeratinous region such as CMC and intermacrofibrillar region, like the diffusion of dye molecules in wool. In the concentrated NaCl aqueous medium, the reaction sites were restricted in the outer surface nonkeratinous region of fiber. The diffusion mechanism of dye molecules across CMC was confirmed by these information. Liquid chromatographic behavior of wool fiber, as column stationary phase was investigated to confirm this diffusion mechanism. The theoretical equation was set up for a concentration distribution curve in a multiple layrs of fabric. A descaled(decuticled) wool fabric was used to simplify the diffusion process. We examined the applicability our method to the diffusion of an acid dye in multiple layrs of decuticled wool fabric. We estimated the useful diffusion parameters for wool fiber assembly.

在纤维组合体染色过程中，由于扩散边界层的存在而产生的吸附延迟是不可避免的。以羊毛染色为例，染色速率会受到扩散层传质过程和表皮等屏障的影响。我们测量了未处理羊毛纤维和电晕放电羊毛纤维（16倍）的平衡染料吸收和染色率。电晕放电羊毛纤维的平衡染料吸收率与未处理羊毛纤维相同。电晕排放羊毛纤维的染色率略高于未处理羊毛纤维。用亲水性多功能环氧化合物（甘油聚缩水甘油酯醚- gpe）对羊毛纤维进行处理。AgNO_3染色样品的透射电镜观察结果表明，GPE主要分布在CMC等非角化区和大纤维间区，与染料分子在羊毛中的扩散一样。在浓NaCl水溶液中，反应位点局限于纤维的外表面非角化区。这些信息证实了染料分子在CMC上的扩散机制。研究了羊毛纤维作为柱固定相的液相色谱行为，以证实其扩散机理。建立了多层织物中浓度分布曲线的理论方程。采用去鳞（细化）羊毛织物简化扩散过程。我们测试了我们的方法对酸性染料在多层精细羊毛织物中的扩散的适用性。我们估计了羊毛纤维组装的有用扩散参数。