Textile Research Journal, February 1st, 2005
Abstract
This paper describes a study of the ion exchange properties of alginate fibers. The release of calcium ions into the contacting solution is measured by an atomic absorption spectrometer. The calcium alginate fibers are placed in aqueous solutions of Na^sub 2^SO^sub 4^; with the formation of CaSO^sub 4^, these fibers can be converted into a mixed calcium/sodium alginate. Results show that the sodium ions in the fibers help increase their gel swelling ratio. Calcium alginate fibers can also be treated with aqueous solutions of ZnCl^sub 2^, producing mixed calcium/zinc alginate fibers. ...
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