Abstract
The visible absorption spectra of the cross-sections of dyed viscose films were measured by means of a microspectrophotometer. We found that the spectra of Acridine Orange in the cross-sections of films showed a high maximum at 475 mμ, which would be referred to as β-band (a monomer peak at 497 mμ). It was explained from microscopic photographs and electron microscopic photographs that the dimer band arises from dye aggregates or crystals at the void places of viscose film.
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