Study on the Effect of Perspiration on Wearing Comfort

1.第一个研究针对服装面料中纤维差异对服装层间热湿传递过程的影响。我们选择了两种纤维，即棉和涤纶。穿棉外衣的受试者平均皮肤温度(C/P)高于穿涤纶外衣(P/C)的受试者，P/C受试者皮肤附近的小气候湿度高于C/P受试者。P/C受试者汗水的蒸发倾向于在棉的内表面靠近皮肤而不是涤纶的外表面进行，而C/P受试者的汗水蒸发倾向于在棉的外表面而不是聚脂的内表面进行。虽然汗液在体温调节中起着至关重要的作用，但它也是弄脏衣服的罪魁祸首，因为它含有大量有机化合物以及水和电解质。这些化合物的功能意义是st…更令人费解的是。阻碍准确分析汗液成分的技术障碍之一是缺乏理想的分析方法。第二项研究的目的是建立一种简单、快速的分析汗液中氨基酸等有机化合物的方法。通过在测量前用邻苯二甲醛标记，我们能够得到包含在汗液中的氨基酸的清晰的色谱图。本方法可方便地应用于人体汗液中氨基酸组成的研究。用液相色谱研究了发汗物质与纤维材料的相互作用。将组氨酸和乳酸作为人体排汗中的模型物质，分别选择性地吸附在纤维素和聚酰胺粉末上。两种体系的吸附机理均为朗缪尔型。由该等温线计算出的吸附等温线对组氨酸/纤维素和乳酸/聚酰胺体系的吸附热分别为-1.54和-1.03千卡/摩尔。表观熵分别为13.6卡/摩尔/度和8.4卡/克/度。这些数据表明，汗液物质与纤维物质之间的相互作用很弱，说明吸附伴随着汗液物质附近水结构的紊乱。较少

1. The first study was directed toward the effects of fiber differences in clothing fabrics on heat and moisture transfer processes between clothing layers. We chose two types of fibers, namely, cotton and polyester. Mean skin temperature of the subject wearing a cotton wear over a polyester one (C/P) was higher than on the subject wearing a polyester wear over a cotton one (P/C), and humidity of the microclimate next to skin in P/C was higher than in C/P. The evaporation of sweat tends to be carried out at the inner surface of cotton to next to skin rather than outer surface of polyester in P/C, whereas evaporation of sweat tends to carried out at the outer surface of cotton rather than inner surface of polyester next to skin in C/P.2. Although eccrine sweat plays an essential role in thermoregulation to heat, it is responsible for soiling of clothing, because it contains numerous organic compounds as well as water and electrolytes. The functional significance of these compounds is st … More ill poorly understood. One of the technical barriers hampering precise analysis of the components of sweat is the lack of an ideal method of analysis. The object of the second study is to develop a simple and rapid method to analyze organic compounds such as amino acids contained in eccrine sweat by using the procedure of high performance liquid chromatography (HPLC). We were able to obtain well-defined chromatograms of amino acids contained in eccrine sweat by labeling with o-phthalaldehyde prior to measurements. Our present method can be readily applied to studies of composition of amino acid in human sweat.3. The interaction of perspiration substances with fiber materials was investigated by liquid chromatography. Histidine and lactic acid as model substances in human perspiration were selectively adsorbed onto cellulose and polyamide powder, respectively. The adsorption mechanisms of both systems are of Langmuir type. The enthalpies of adsorption calculated from the isotherm are -1.54 and -1.03 kcal/mol to histidine/cellulose and lactic acid/polyamide systems, respectively. The entropies are 13.6 and 8.4 cal/mol/deg, respectively. These figures mean that the interaction between the perspiration substances and fiber materials is weak, and suggest that the adsorption is accompanied by disorder of water structure nearby the perspiration substances. Less