Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hung Hom, Hong Kong, People's Republic of China.
Langmuir. 2010 Apr 6;26(7):4675-9. doi: 10.1021/la903562h.
A simple method for fabricating environmentally stable superhydrophilic wool fabrics is reported here. An ultrathin silica layer coated on the wool altered both the surface roughness and the surface energy of the fiber and endowed the wool fabrics with excellent water absorption. The process of coating silica sols was dependent on an acid solution of low pH, which influenced the electrostatic interactions between nanoparticles and wool fibers. The morphology and composition of silica-sol-coated wool fabrics were characterized by a combination of SEM, TEM, EDX, FTIR, and XPS measurements. The possible mechanism and size effect of silica nanoparticles on the hydrophilic property of wool fabric were discussed. The washing fastness of the superhydrophilic wool fabrics in perchlorethylene and water was also evaluated. This study shows that wool fabrics modified by optical transparence, chemical stability, and nontoxic silica sols are promising in constructing smart textiles.
本文报道了一种简单的制备环境稳定超亲水羊毛织物的方法。在羊毛上涂覆一层超薄的二氧化硅层，改变了纤维的表面粗糙度和表面能，使羊毛织物具有优异的吸水性。涂覆硅溶胶的过程取决于低 pH 值的酸溶液，这影响了纳米颗粒与羊毛纤维之间的静电相互作用。采用 SEM、TEM、EDX、FTIR 和 XPS 测量相结合的方法对硅溶胶涂层羊毛织物的形貌和组成进行了表征。讨论了纳米二氧化硅对羊毛织物亲水性能的可能机理和尺寸效应。还评估了超亲水羊毛织物在全氯乙烯和水中的耐洗牢度。本研究表明，用光学透明、化学稳定和无毒的硅溶胶修饰的羊毛织物在构建智能纺织品方面具有广阔的应用前景。
