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Effect of Perspiration Substances on Textiles

排汗物质对纺织品的影响

基本信息

批准号：
01580058
负责人：
KOMAKI Motoko
金额：
$ 1.15万
依托单位：
Ochanomizu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01580058/
关键词：
Perspiration Lactic acid Histidine Reactive dye Photofading Adsorption Frontal chromatography クロマトグラフィ-

项目摘要

1. The effect of histidine and lactic acid as models of human perspiration on photofading of dyes have been investigated in solution and on fiber and following results are obtained.1) Histidine and lactic acid themselves are not large negative redox potential but both reductively act to azo dyes under uv irradiation.2) Alpha- hydroxy carbonic acid such as lactic acid stronger act to metal free azo dye than copper-complex dye under uv irradiation.3) Amino acid structure as histidine and glysine make copper-complex dye to be more susceptible to photo-fading.4) In the case of azo dyes, azo-hydrazon tautomerization also occur. Histidine promote the reaction.5) The color change of dyed material with perspiration substances is attributed to be absorbing the short visible light by photo-products of histidine.6) Antraquinon dye differ from azo dye in remarkably fading with lactic acid under visible light irradiation.7) The photofading of dyes on cellophane and cotton cloth are slower than in solution but tend to be the same effect of perspiration substances as in solution.2. The interaction of perspiration substances with fiber materials has been investigated by liquid chromatography. Histidine and lactic acid as model substances in humann perspiration selectively adsorb onto cellulose and polyamid powder respectively.The adsorption mechanisms of both system of histidine/cellulose and lactic acid/polyamid are Langmuir type. The enthalpy (DELTAH^ﾟ) of adsorption calculated from adsorption isotherm are -7.93 kcal/mol and -3.91 kcal/mol to histidine/cellulose and lactic acid/polyamid system respectively. The entropy (DELTAS^ﾟ) are -5.3 cal/mol/deg and -0.4cal/mol/deg respectively. These figures mean that the interaction between histidine and lactic acid and fiber materials are weak and physical adsorption.

1.本文研究了组氨酸和乳酸作为人体汗液的模拟物对染料光褪色的影响，结果表明：1）组氨酸和乳酸本身的氧化还原电位并不很大，但在紫外光照射下对偶氮染料都有还原作用; 2）α-羟基碳酸如乳酸对无金属偶氮染料的作用强于铜离子，而对铜离子的作用则弱于铜离子。3）组氨酸和乳酸对染料的光褪色有明显的抑制作用。4）组氨酸和乳酸对无金属偶氮染料的光褪色有较强的抑制作用。5）组氨酸和乳酸对无金属偶氮染料的光褪色有较强的抑制作用。6）组氨酸和乳酸对无金属偶氮染料的光褪色有较强的抑制作用。3）组氨酸和甘氨酸等氨基酸结构使铜络合染料更易光褪色; 4）偶氮染料也发生偶氮-腙互变异构反应。组氨酸促进了反应的进行。5）汗液物质染色后的材料颜色变化是由于组氨酸的光产物吸收了可见光的短波长。6）蒽醌染料与偶氮染料不同，在可见光照射下与乳酸的褪色显著。7）染料在玻璃纸和棉布上的光褪色比在溶液中慢，但往往与汗液物质的作用相同，解决方案2.用液相色谱法研究了汗液物质与纤维材料的相互作用。以人体汗液中的组氨酸和乳酸为模型物质，分别在纤维素和聚酰胺粉末上选择性吸附，组氨酸/纤维素和乳酸/聚酰胺体系的吸附机理均为Langmuir型。由吸附等温线计算出组氨酸/纤维素体系和乳酸/聚酰胺体系的吸附焓（Δ H_（？））分别为-7.93kcal/mol和-3.91kcal/mol。熵（Δ TAS ^ε）分别为-5.3cal/mol/deg和-0.4cal/mol/deg。这些数字意味着组氨酸和乳酸与纤维材料之间的相互作用是弱的和物理吸附的。