PROBLEM TO BE SOLVED: To obtain a fine carbon fiber-containing dispersion liquid having useful antibacterial properties on the basis of different antibacterial characteristics of various kinds of CNT (carbon nanotubes).SOLUTION: The antibacterial dispersion liquid contains 0.001-20 wt.% of fine carbon fibers. The fine carbon fiber is produced by a vapor-phase growth method and is constituted so that a graphite net face comprising only carbon atoms forms a hanging bell-shaped structural unit, which has a closed top part and a lower portion-opened drum part and in which an angle θ to be formed by the generatrix of the drum part and the fiber axis is smaller than 15°, 2-30 pieces of the hanging bell-shaped structural units are piled up while sharing the central axis to form an assembly and the assemblies are connected to one another in a Head-to-Tail structure while leaving a space between the adjacent ones to form the carbon fiber.COPYRIGHT: (C)2015,JPO&INPIT【課題】 各種CNTにおける抗菌特性の違いに基づいて、有用な抗菌性を備えた微細炭素分散液を得ることにある。【解決手段】 微細な炭素繊維を0.001~20重量%含む抗菌性分散液であって、前記微細な炭素繊維は、気相成長法により製造される微細な炭素繊維であって、炭素原子のみから構成されるグラファイト網面が、閉じた頭頂部と、下部が開いた胴部とを有する釣鐘状構造単位を形成し、前記胴部の母線と繊維軸とのなす角θが15°より小さく、前記釣鐘状構造単位が、中心軸を共有して2~30個積み重なって集合体を形成し、前記集合体が、Head-to-Tail様式で間隔をもって連結して繊維を形成している。【選択図】なし
