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The aggregations or crystals of metal-complex dye (C. I. Acid Yellow 161) on wool fibre

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Summary

The visible absorption spectra of dye crystals and the cross-section of wool fibre dyed with metal complex dye (C. I. Acid Yellow 161) were measured by means of a microspectrophotometer. The spectrum of crystal showed sharp and high maximum at 410 nm referred to as the peak from single crystal of the dye. The spectrum of the cross-section of dyed fibre showed two peaks of 410 nm (crystal-band) and 435 nm (monomeric state of the dye). Also, the electron diffraction pattern of the cross-section of dyed wool fibre showed the reflection ring of chromium. These results suggested that the dye should be present in the wool fibre in the monomeric, aggregate or crystalline state.

Zusammenfassung

Mit Hilfe des Mikrospektrophotometers wurden die Absorptionsspektren im Sichtbaren von Farbstoffkristallen und von Querschnitten der mit Metallkomplex-Farbstoff (C. I. Acid Yellow 161) gefärbten Woll-Fasern gemessen. Die Kristall-Spektren zeigen ein scharfes und hohes Maximum bei 410 nm, das der Bande des Farbstoffkristalls zugeordnet werden muß. Die Spektren der Querschnitte gefärbter Fasern zeigen zwei Banden: seine bei 410 nm (Kristallbande) und eine bei 435 nm (Monomerbande). Auch zeigen die Elektronenbeugungen an Querschnitten gefärbter Fasern die Ring des Chromes. Dies läßt vermuten, daß in den Wollfasern Monomeres, Aggregate oder Kristalle des Farbstoffs existieren.

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References

  1. Ohtsu, T., K. Nishida, K. Nagumo, K. Tsuda, Kolloid-Z. u. Z. Polymere249, 1077 (1971),T. Ohtsu, K. Nishida, K. Nagumo, K. Tsuda, ibid,250, 860 (1972),T. Obtsu, K. Nishida, K. Nagumo, K. Tsuda, ibid,252,273 377(1974).

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Ohtsu, T., Nishida, K. & Tsuda, K. The aggregations or crystals of metal-complex dye (C. I. Acid Yellow 161) on wool fibre. Colloid & Polymer Sci 254, 964–966 (1976). https://doi.org/10.1007/BF01516911

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  • DOI: https://doi.org/10.1007/BF01516911

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