水晶振動子を用いた洗浄現象の動的解析  [in Japanese] Dynamic analysis of soil removal process using a quartz crystal microbalance  [in Japanese]

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Abstract

<p>汚れの洗浄は、家庭生活、各種工業分野などで必要不可欠なプロセスである。効果的に洗浄を行うには、汚れや被洗物の種類、汚れの付着状態などに応じて、適切な洗浄条件を設定することが必要である。そのためには洗浄平衡だけではなく動的な観点からの洗浄の解析が重要である。本総説では、洗浄性を動的に評価するため、水晶振動子法を用いて洗浄過程を追跡し、得られた知見を紹介する。モデル基質には、高分子、カーボン、ガラスおよび金属を用い、その上に脂肪酸汚れを分子配向を変化させて、洗浄を行った。さらに、得られた周波数–時間曲線から汚れの除去メカニズムについて考察した。</p>

<p>The removal process of fatty acid in aqueous systems was investigated using well-defined model detergent systems consisting of polymer, carbon, silica, and gold as substrates, and stearic acid as soil. The detergency was evaluated by the quartz crystal microbalance (QCM) technique. The experimental results were discussed based on detergent solution, soil deposited state and surface properties of the substrate. From the QCM frequency change during the soil removal, it was found that in the alkali solution the stearic acid deposited by the Langmuir–Blodgett (LB) method was rapidly removed due to the neutralization, whereas in the anionic surfactant solutions the LB films was removed by the liquid penetration. By comparing the removal efficiencies obtained from the area (evaluated using microscopic image analysis) and the mass (evaluated using QCM method) of soil deposited on the substrate, it was suggested that the nonionic surfactant micelles contributed to the removal of stearic acid.</p>

Journal

  • Journal of The Society of Japanese Women Scientists

    Journal of The Society of Japanese Women Scientists 18(1), 1-11, 2018

    The Society of Japanese Women Scientists

Codes

  • NII Article ID (NAID)
    130006896525
  • NII NACSIS-CAT ID (NCID)
    AA12034071
  • Text Lang
    JPN
  • ISSN
    1349-4449
  • NDL Article ID
    029594654
  • NDL Call No.
    Z74-C326
  • Data Source
    NDL  J-STAGE 
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