Influence of Urea on the Diffusion of Polyethylenimine in Human Hair

DOI Web Site 1 Citations Open Access
  • Kuzuhara Akio
    Mandom Corp.,Central Research Laboratories,5-12,Juniken-cho,Chuo-ku,Osaka 540-8530,Japan
  • Tabata Isao
    Faculty of Engineering,Fukui University,3-9-1,Bunkyo,Fukui 910-8057,Japan
  • Hori Teruo
    Faculty of Engineering,Fukui University,3-9-1,Bunkyo,Fukui 910-8057,Japan

Bibliographic Information

Other Title
  • ポリエチレンイミンの毛髪内部拡散に及ぼす尿素の影響

Search this article

Description

In order to investigate the influence of urea on the diffusion of polyethylenimine(PEI) into human hair,cross sectional samples of white human hair treated with PEI solutions containing urea and no urea,were prepared.In particular,a method for analyzing the diffusion behavior of PEI in the bleached human hair was developed,in which the PEI parts in the cross-sectional samples were dyed with orange orange II and the cross sections were examined at a wavelength of 487 nm (λmax of orange II) with a microspectrophotometer.<br>The penetration of PEI into virgin hair and bleached hair clearly increased by adding 20 wt % urea in all cases despite varying PEI molecular weights (600-20000) except for the virgin hair sample treated with PEI (Mw: 20000). Also, the diffusion pattern of PEI at pH 11.1 showed Fickian type characteristics regardless of adding urea or not. The diffusion coefficient of PEI (Mw: 600), with urea added, increased 2 times in comparison with that of PEI, with urea not added. From these experiments, it was demonstrated that urea acts as a penetration accelerator for PEI.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 59 (4), 123-127, 2003

    The Society of Fiber Science and Technology, Japan

Citations (1)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top