2023-12-11 ワシントン州立大学(WSU)
◆繊維は、リサイクルTシャツから取られた綿セルロースと導電性ポリマーを組み合わせて製造され、良好な界面結合を実現しました。
<関連情報>
- https://news.wsu.edu/press-release/2023/12/11/new-conductive-cotton-based-fiber-developed-for-smart-textiles/
- https://www.sciencedirect.com/science/article/abs/pii/S0144861723007737
ウェアブル電子テキスタイルのためのセルロースベースの導電性複合繊維の新しい構造設計 A novel structural design of cellulose-based conductive composite fibers for wearable e-textiles
Wangcheng Liu, Hang Liu, Zihui Zhao, Dan Liang, Wei-Hong Zhong, Jinwen Zhang
Carbohydrate Polymers Available online: 18 August 2023
DOI:https://doi.org/10.1016/j.carbpol.2023.121308
Abstract
Cellulose-based conductive composite fibers hold great promise in smart wearable applications, given cellulose’s desirable properties for textiles. Blending conductive fillers with cellulose is the most common means of fiber production. Incorporating a high content of conductive fillers is demanded to achieve desirable conductivity. However, a high filler load deteriorates the processability and mechanical properties of the fibers. Here, developing wet-spun cellulose-based fibers with a unique side-by-side (SBS) structure via sustainable processing is reported. Sustainable sources (cotton linter and post-consumer cotton waste) and a biocompatible intrinsically conductive polymer (i.e., polyaniline, PANI) were engineered into fibers containing two co-continuous phases arranged side-by-side. One phase was neat cellulose serving as the substrate and providing good mechanical properties; another phase was a PANI-rich cellulose blend (50 wt%) affording electrical conductivity. Additionally, an eco-friendly LiOH/urea solvent system was adopted for the fiber spinning process. With the proper control of processing parameters, the SBS fibers demonstrated high conductivity and improved mechanical properties compared to single-phase cellulose and PANI blended fibers. The SBS fibers demonstrated great potential for wearable e-textile applications.