Adsorption of Double-chain Cationic Surfactant on Hydrophilic Surface.

DOI Web Site Web Site 3 Citations 22 References
  • NAKAMURA Kazuyoshi
    Department of Living Science, Faculty of Education, Niigata University
  • FUJIWARA Natsumi
    Department of Living Science, Faculty of Education, Niigata University
  • KUNIEDA Hironobu
    Division of Artificial Environments Systems, Graduate School of Engineering, Yokohama National University

Bibliographic Information

Other Title
  • 二本鎖型カチオン界面活性剤の親水性表面への吸着形態
  • 2ホンサガタ カチオン カイメン カッセイザイ ノ シンスイセイ ヒョウメン

Search this article

Abstract

The double-chain cationic surfactant (dioctadecyl dimethyl ammonium chloride; DODAC) is used as a fabric-softener or for hair rinsing. The morphologies of DODAC agregates adsorbed on a hydrophilic surface was investigated by electron and atomic force microscopy.<BR>An aqueous DODAC dispersion was dropped on a hydrophilic nitrocellulose membrane and was observed by transmission electron microscopy by using of negative-staining method. Multilayer vesicles (250 nm in mean diameter) were adsorbed on the hydrophilic surface. Following ultrasonication, small unilamellar vesicles could be observed on the surface.<BR>The texture and thickness of vesicles on the mica surface was measured by an atomic force electron microscopy. The thickness of ultrasonicated vesicles after drying was 4 nm. Interior water of vesicle is eleminated by drying, thus causing the closed-shell structure to collapse, and this may have caused the bilayer to take on an interdigitated structure.<BR>DODAC molecules do not form monolayers on a hydrophilic surface, but are adsorbed as a vesicular state.

Journal

Citations (3)*help

See more

References(22)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top