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Emodin dermocybin natural anthraquinones as mordant dyes for wool and polyamide
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ABSTRACT
Wool and polyamide are dyed with the pure natural anthraquinones, emodin and dermocybin, using the mordant dyeing technique. The anthraquinones are isolated from the fungus Dermocybe sanguinea. Potassiumaluminum sulphate, potassium dichromate, cobaltous sulphate, and ferrous sulphate are used as mordants. The color of each dyed material is investigated in terms of the Cielab L*, a*, and b* values, and color-fastnesses to light, washing, and rubbing are tested according to the ISO standards. Emodin dyes wool and polyamide yellow and red, whereas dermocybin confers purple and violet ...
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Feedback models reduce op-amp circuits to voltage dividers.
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How should feedback be delivered?
Magazine article from: JOPERD--The Journal of Physical Education, Recreation & Dance
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feedback strategies 101
Magazine article from: Dance Teacher
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Receiving feedback
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