Studies on the Relation between the Control of Surface Free Energies of Fabrics by Surface Modification and Detergency

研究了织物表面改性对去油污效果的影响，包括防污整理和防污整理。毛细管铺展测试表明，接枝丙烯酸使聚酯更亲水。采用接触角测量、FT-IR和ESCA光谱对接枝丙烯酸的聚酯表面进行了表征。表面上的COOH基团只影响表面能的极性分量，而不影响色散能分量。FT-IR和ESCA的表征都提供了高度的表面敏感性信息，FT-IR和ESCA的相对峰面积比与分散组分呈线性关系。用氟烷基嵌段聚合物对尼龙和聚酯进行了表面改性，并通过接触角测量和ESCA进行了表征。表面自由能随嵌段聚合物覆盖率的增加而降低。在ESCA中观察到表面自由能与FLS强度之间存在线性关系，并以角鲨烷、三烯烃和油酸为模型皮脂土壤进行了清洗实验。结果表明，表面亲水(接枝)能提高油污的去除效果，但表面脂化会降低油污的去除效果。从去污功的角度，用表面自由能的极性分量的变化来解释表面改性去除的这些变化。

Effects of surface modification of fabrics on removal of oily soil were investigated for both soil release and soil repellent finishes. From the capillary spreading measurements, it was made clear that grafting with acrylic acid makes polyester more hydrophilic. The surface of polyester grafted with acrylic acid was characterized using contact angle measurements and FT-IR and ESCA spectroscopy. The COOH groups on the surface influence only on the polar component of surface energy and not the dispersive one. Both the FT-IR and ESCA characterizations provides information with a high degree of surface sensitivity, and the relative peak area ratios of FT-IR and ESCA were linearly correlated to the dispersive component.The surfaces of nylon and polyester were modified with fluoro alkyl blockpolymers, and characterized by contact angle measurements and ESCA. The surface free energies decreased with the increase in covering ratios by block polymer. There observed a linear relationship between surface free energy and Fls intensity in ESCA.Washing experiments were examined using squalane, triolene and oleic acid as model sebum soil. It was found that surface hydrophilization (grafting) improves the removal of oily soil, but surface lipohilization lessens the removal. On the view point of work of detergency, these changes in removal by surface modification were interpreted in terms of changes in polar component of surface free energy.