직/편성물 염색

SIMULTANEOUS OXIDATIVE AND REDUCTIVE PHOTOFADING OF C.I. REACTIVE RED 22 AND BLACK 5 ON CELLULOSE IN THE PRESENCE OF OXYGEN AND SUBSTRATE UNDER WET CONDITIONS.

  • 출판일1991.09
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 292
Spectral analysis was used to kinetically examine the reductive and oxidative photofading of Red 22 Black 5 on cellulose upon exposure in substrate solutions. In the presence of DL-mandelate and oxygen, the oxidative and reductive fading of both dyes occurred simultaneously from the beginning, and later the oxidative fading was suppressed depending on the concentration of oxygen. Upon exposure of Red 22, in the presence of lactate of high concentration of oxygen, oxidation initially occurred and was followed by reduction with the complete inhibition of oxidation. An increase in the concentration of oxygen promoted the initial oxidation and an increase in the concentration of substrate promoted subsequent reduction. Upon exposure of Black 5 in the presence of lactate of high concentration and oxygen, similar fading behavior to that of DL-mandelate solutions was observed, but the oxidative products formed were lmmediately further photo-reduced. 27 refs.
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