Development of a Method for Injection of Nanoparticles into Cotton Fibers by Use of Supercritical Carbon Dioxide

DOI Web Site Web Site 1 Citations 17 References
  • Katayama Shigeo
    Marusan Industry Co., Ltd.
  • Sameshima Sho
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University
  • Yonezawa Setsuko
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University
  • Iwai Yoshio
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University

Bibliographic Information

Other Title
  • 超臨界二酸化炭素を利用してナノ粒子を綿繊維内部に注入する技術の開発
  • チョウリンカイ ニサンカ タンソ オ リヨウ シテ ナノ リュウシ オ ワタ センイ ナイブ ニ チュウニュウ スル ギジュツ ノ カイハツ

Search this article

Abstract

In order to inject nanoparticles into cotton fibers, cavities in the fibers should be expanded. To expand the cavities, cotton fibers were immersed in 24 wt%NaOH aqueous solution for 1 h, and then dried at 100°C for 4 h. NaOH remaining in the fibers was then removed by washing. SEM revealed many cavities of about 500 nm in diameter in the cross sections of the cotton fibers. The cotton fibers were immersed in aqueous solution of 30 ppm silver nanoparticles, and the solution was maintained in an atmosphere of supercritical CO2 at 20 MPa and 80°C for 1 h. Many silver nanoparticles of 10–30 nm in diameter were observed in the cross sections by TEM. The cotton fibers with injected silver nanoparticles were washed with a magnetic stirrer for 3 h, after which the number densities of particles in the fibers were almost the same as before the washing, showing that the particles had not been washed out. In an antibacterial test on the cotton fibers with injected silver nanoparticles, the value of antibacterial activities after 6 h of washing was 5.7, showing that the antibacterial performance had hardly decreased.

Journal

Citations (1)*help

See more

References(17)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top