Chitin was obtained from shell of the tail portions of the prawn Nephrops norvegicus (L) and was deacetylated to give chitosan. The adsorption and diffusion of copper (II) ions were studied and the diffusion of the acid dye CI Acid Orange 10 through chitosan films containing different amounts of chelated copper was investigated. It was found that with increasing copper content the rate of diffusion through the membrane decreased.
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Blair et al. (1981) studied this question.
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