絹糸の銅塩処理による銅イオンの吸着挙動と光劣化の抑制効果

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タイトル別名
  • ADSORPTION BEHAVIOR OF COPPER (II) IONS BY SILK YARNS ON CUPRIC SALT TREATMENTS, WITH REFERENCE TO ITS INHIBITORY EFFECT ON PHOTODEGRADATION
  • キヌイト ノ ドウエン ショリ ニ ヨル ドウ イオン ノ キュウチャク キョドウ ト ヒカリ レッカ ノ ヨクセイ コウカ

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抄録

Cu++ adsorption on domestic and erie silk spun yarns was treated by copper (II) and its effect on their photodegradation was examined.<br>The spun silk yarns, when treated by the cupric salt solutions, adsorb Cu++ ions about to 0.5% of the weight of fiber in the case of the domestic silk, and about to 1.0% in the case of the erie silk, though the adsorbed amounts of Cu++ ions differ to some extent by the treating conditions.<br>Generally, the adsorbed amount of Cu++ ions in the silk yarns increases with increasing temperature and pH of the cupric salt solutions. The elevation of temperatue causes the increase in the primary adsorption. The effect of the temperature is larger in the erie silk than in the domestic silk. The adsorption amount of Cu++ ions increases with increased in alkali concentration in the copper salt solution. Especially NH4OH addition increases not only the adsorption amount but also Cu++ bonding strength owing to the formation of ammine complex. Steeping of the spun yarns into a NH4OH solution after the copper (II) treatments also increases the adsorbed amount and bonding strength of Cu++ ions, this is also due to the formation of ammine complex.<br>The fixed Cu++ ions in the treated silk yarns show an inhibitory effect on the photodegradation. When the deterioration is tested by Fade meter irradiation for 80 hours, the decrease in the strength and elongation of the Cu++-treated domestic silk was less by above 30% than that of untreated one but in the case of the treated erie silk this inhibitory effect was smaller than in the case of domestic silk.

収録刊行物

  • 繊維学会誌

    繊維学会誌 26 (7), 316-323, 1970

    社団法人 繊維学会

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