pH-Potentiometirc Study of Polyion Complexes between Chitosan and Poly(vinyl sulfate) or Dodecylbenzene Sulfonate

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Polyion complexes of three chitosans with poly(vinyl sulfate) (PVS) and dodecylbenzene sulfonate (DBS) were examined by a potentiometric study that was to separately measure the pH of sample solutions individually prepared. Apparent formation constants (<i>K</i><sub>i</sub>) of ion association between the protonated amines of chitosan and the sulfates of PVS or the sulfonates of DBS were determined. The effects of pH, coexistent salt concentration, and molecular weight on the values of <i>K</i><sub>i</sub> were investigated in order to reveal the properties of the complexation. The values of <i>K</i><sub>i</sub> for chitosan-PVS were quite larger than that for chitosan-DBS. The deducing effect of the coexistent salt was strong against chitosan-PVS, but was weak against chitosan-DBS. Thus, chitosan-PVS complexes possessed a strong electrostatic binding, and chitosan-DBS complexes included a hydrophobic interaction. For chitosan-PVS complexes the effect of the coexistent salt was weaker for a high molecular weight of chitosan than for a low molecular weight.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry  

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 24(4), 543-546, 2008-04-10 

    The Japan Society for Analytical Chemistry

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各種コード

  • NII論文ID(NAID)
    10021099826
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    NOT
  • ISSN
    09106340
  • NDL 記事登録ID
    9452364
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z54-F482
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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