Capillary wetting rates in nylon fibrous assemblies
Capillary wetting rates in nylon fibrous assemblies
复制标题
尼龙纤维组件中的毛细管润湿率
DOI：
10.1163/156856198x00830
复制
发表时间：
1998
影响因子：
2.3
通讯作者：
M. Tagawa
中科院分区：
文献类型：
--
作者：
Y. Okamura;K. Gotoh;Makiko Kosaka;M. Tagawa
尼龙纤维组件中的毛细管润湿率通过润湿引起的电导率变化进行评估。所使用的润湿液是在不存在和存在离子表面活性剂的情况下各种pH值的氯化钾水溶液。选择十二烷基硫酸钠和十二烷基三甲基氯化铵作为表面活性剂。通过威廉米法测量润湿液体在尼龙纤维上的接触角，并根据动电数据确定纤维的等电点。在pH 4附近观察到最小润湿率和最大接触角，这与尼龙纤维的等电点一致。在表面活性剂离子存在的情况下，在中和尼龙表面电荷的浓度下也获得了最小润湿率。这些实验结果表明，尼龙纤维组件中的毛细管润湿率受到尼龙/溶液界面处电现象的影响，通过连续...
The capillary wetting rates in nylon fibrous assemblies were evaluated from the change in electrical conductivity due to wetting. The wetting liquids used were aqueous potassium chloride solutions of various pHs, in both the absence and the presence of ionic surfactants. Sodium dodecyl sulfate and dodecyltrimethylammonium chloride were chosen as surfactants. The contact angles of the wetting liquids on the nylon fiber were measured by the Wilhelmy method and the isoelectric point of the fiber was determined from electrokinetic data. The minimum wetting rate and the maximum contact angle were observed near pH 4, which coincided with the isoelectric point of the nylon fiber. In the presence of surfactant ions, the minimum wetting rate was also obtained at the concentration where the surface charge of nylon was neutralized. These experimental findings indicate that the capillary wetting rates in nylon fibrous assemblies are influenced by the electrical phenomena at the nylon/ solution interfaces via the cont...