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Diffusion of acid dyes in nylon film in the presence of inorganic salts

1984; Wiley; Volume: 22; Issue: 1 Linguagem: Inglês

10.1002/pol.1984.170220106

1542-9369

Hidehiro Kumazawa, Eizô Sada, Tetsuo Ando,

Photopolymerization techniques and applications

Abstract The concentration‐dependence measured by steady‐state permeation and unsteady‐state dyeing methods for a system of acid dye C.I.Acid Blue 182–nylon 6 film in the presence of inorganic salts such as NaCl, Na 2 SO 4 , and K 2 SO 4 , was analyzed in terms of parallel diffusion with simultaneous multimodal adsorption. It would found that the dyeing process with added NaCl was governed by surface diffusion with two kinds of Langmuir adsorption, whereas with added Na 2 SO 4 and K 2 SO 4 it was governed by surface diffusion with three kinds of Langmuir adsorption.