抗菌成分としての銀錯体 R_p [Ag_q (S_2O_3)_r] (R=Na, K)の熱安定性 Thermal Stability of Silver Thiosulfato Complex R_p [Ag_q (S_2O_3)_r] (R=Na, K)

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Anti-microbial materials were synthesized with silver thiosulf ato complex R<sub>p</sub>[Ag<sub>q</sub>(S<sub>2</sub>O<sub>3</sub>)<sub>r</sub>](R=Na, K) on silica gel. Thermal stability of the materials was better with a potassium salt than a sodium salt. It was suggested that the change of cation "R" of the complexes from Sodium to Potassium resulted in thermal stability against oxidation after decomposition of the complexes. Among several cations for the complex, potassium was the most suitable. Potassium salts of the complex K<sub>p</sub>[Ag<sub>q</sub>(S<sub>2</sub>O<sub>3</sub>)<sub>r</sub>] were synthesized with various ratios of r/q from 1 to 8. With various ratios of r/q, each sodium or potassium salt of the complex was kneaded with resin, and the color difference value Δ<i>E</i> of the surface against natural resin was measured. TG-DTA measurements showed minimum thermal stability at r/q=4 and maximum at 6. Color measurements showed lower Δ<i>E</i> values with K salts than Na salts. The Δ<i>E</i> values of both salts showed peaked at r/q=4 and decreased at 6. Results of thermal stability TG-DTA measurements showed an agreement with the result of color measurements. It was thus suggested that the complex of potassium salt with an S<sub>2</sub>O<sub>3</sub>/Ag ratio of "6" had superior properties among the complexes for thermal stability against kneading treatment with resin. The chemical composition of the complex was K<sub>11</sub>[Ag(S<sub>2</sub>O<sub>3</sub>)<sub>6</sub>].

収録刊行物

  • 表面技術 = The Journal of the Surface Finishing Society of Japan  

    表面技術 = The Journal of the Surface Finishing Society of Japan 47(1), 42-45, 1996-01 

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002255446
  • NII書誌ID(NCID)
    AN1005202X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09151869
  • NDL 記事登録ID
    3918091
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-291
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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