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Studies on Assessment of Reactive Dyeings from Viewpoint of Eco-Textiles

从生态纺织品的角度评价活性染色的研究

基本信息

批准号：
13558007
负责人：
OKADA Yasuyo
金额：
$ 4.22万
依托单位：
Otsuma Women's University (2002-2003)Otsuma Women's University Junior College Division (2001)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

(1):Photosensitized oxidation of four triphenodioxazine (TPDO) reactive dyes and a copper phthalocyanine (CuPc) reactive dye on cellulosic films by Rose Bengal (RB) was examined in the aqueous solutions under aerobic conditions. No aggregation effect was observed on the fading of TPDO dyes and a CuPc dye on cellulose, but the concentration or filter effect.(2):The stability of seven reactive dyes on cellulose immersed in sodium peroxoborate (PB) solution (UK-TO solution) containing TAED was examined by use of cellulosic films at 60℃. The dye loss from dyed cellophane films was attributed to three contributions : (a)alkaline hydrolysis of dye-fiber bond, (b)oxidative fading of dye chromophore by peroxides, and (c)cellulose degradation accelerated by PB and TAED. The alkaline hydrolysis of dye-fiber bond and the cellulose degradation in UK-TO solution were the dominant factors to cause the dye loss. The dye oxidation in UK-TO solution was a minor factor in the dye loss mechanism. The phy … More sical bonding of dye molecules reinforced the dye-fibre bond stability in UK-TO solution.(3):Photostability of nine vat dyes on cellulosic films was examined. The ease (k_0) with which the dyes were photo-oxidized was estimated by the relative fading of vat dyes on cellophane immersed in aqueous Rose Bengal solution on exposure, a condition resulting in only the photo-oxidative fading. The values of k_0 were small, compared with those of reactive dyes, while those of f comparable. The lightfastness of nine vat dyes on dry cotton fabric had close correlation with log (f k_0).(5):The enthalpy of formation for the azo and hydrazone tautomers of phenylazonaphthol sulfonic acids was estimated both in the gaseous phase and in water using the PM5 and COSMO method.(6):With respect to Orange I and II, azo-hydrazone tautomerism of the undissociated and dissociated species was analysed estimating their enthalpies of formation in both the gaseous phase and water using the PM5 method.(7):Photofading of fifteen reactive azo dyes on cellophane under wet conditions was examined to estimate the essential properties. A linear correlation between the logarithmic product, log (f k_0), and the LF ratings of dyes on dry cotton fabric was found when plots of reactive dyes with low LF and those of the vat dyes examined in a previous paper were added because the ratings of eleven red dyes out of fifteen dyes examined had a narrow range. Less

(1)：在好氧条件下，研究了纤维素膜上四种三苯二恶嗪(TPDO)活性染料和一种铜酞菁(CuPc)活性染料在水溶液中被Rose Bengal(RB)光敏氧化的情况。TPDO染料和CuPc染料对纤维素的褪色无聚集效应，但有浓度或过滤效应。(2)：用纤维素膜在60℃条件下考察了7种活性染料在含有TAED的过氧硼酸钠溶液(UK-TO溶液)中对纤维素的稳定性。染色玻璃纸薄膜的染料损失是由三个方面造成的：(A)染料-纤维键的碱性水解；(B)过氧化氢对染料发色团的氧化褪色；(C)PB和TAED加速了纤维素的降解。染料-纤维键的碱解和在UK-TO溶液中的纤维素降解是造成染料损失的主要因素。染料在UK-TO溶液中的氧化是染料损失机理中的次要因素。The PHY…在UK-TO溶液中，染料分子间更多的键合增强了染料-纤维键合的稳定性。(3)：考察了9种还原染料在纤维素膜上的光稳定性。根据还原染料在浸泡在孟加拉玫瑰水溶液中的玻璃纸上的相对褪色来估算染料被光氧化的难易程度(K_0)，这种条件只导致光氧化褪色。与活性染料相比，k_0值较小，而f与活性染料相当。9种还原染料在干棉织物上的耐晒牢度与log(Fk_0)密切相关。(5)：用PM5和COSMO方法估算了苯偶氮萘磺酸的偶氮染料和肼基异构体在气相和水中的生成焓。(6)：对于橙色I和橙II，用PM5方法分析了未解离和解离物种的偶氮肼互变异构体，并用PM5方法估算了它们在气相和水中的生成热。(7)：考察了15种反应性偶氮染料在玻璃纸上湿条件下的光褪色，以估计其基本性质。由于15种染料中有11种红色染料的染色等级范围较窄，加上低LF活性染料和前文中所研究的还原染料的曲线，发现染料在干棉织物上的对数乘积log(F K_0)与LF等级之间存在线性关系。较少