Miyakawa Masato, Shigaraki Chizuru, Nishioka Masateru
National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1, Nigatake, Miyagino-ku, Sendai, 983-8551, Japan.
Chem Asian J. 2020 Jul 1;15(13):1937-1940. doi: 10.1002/asia.202000500. Epub 2020 Jun 2.
We developed a simple fabrication method, which can emplace functional materials inside porous fibers. In contrast to conventional impregnation methods or surface coating, various functions can be included inside of natural or synthetic fibers. This fabrication method has three steps. First, the raw material solution is absorbed to the fiber. Then the fiber is immersed and pressurized in immiscible liquids with the raw material solution. Finally, the functional particles are fabricated in-situ inside of the fiber by a chemical reaction such as microwave selective heating. As a model reaction, we fabricated silver-nanoparticle-containing cotton fiber. The elemental silver was distributed inside of the fiber in a cross-sectional distribution as confirmed by SEM-EDS. Furthermore, we fabricated fibers with zeolite particles inside of porous PTFE fibers.
我们开发了一种简单的制造方法，该方法可以将功能材料放置在多孔纤维内部。与传统的浸渍方法或表面涂层不同，天然或合成纤维内部可以包含各种功能。这种制造方法有三个步骤。首先，将原料溶液吸收到纤维中。然后，将纤维浸入与原料溶液不混溶的液体中并加压。最后，通过诸如微波选择性加热的化学反应在纤维内部原位制造功能颗粒。作为一个模型反应，我们制造了含银纳米颗粒的棉纤维。通过扫描电子显微镜-能谱仪（SEM-EDS）证实，元素银在纤维内部呈横截面分布。此外，我们在多孔聚四氟乙烯（PTFE）纤维内部制造了含有沸石颗粒的纤维。
