Synthesis of Alginate-derived Polymeric Surfactants
2000
Kang Hyun-Ah | Shin Moon-Sik KAIST, Taejon (Korea Republic)
Alginate derivatives possessing various lengths of alkyl amine (C8, C12, C16) chain were prepared by oxidation followed by reductive amination of alginate, and the products were characterized by spectral analysis. The surface tension, critical micelle concentration (c.m.c.) and solubility of a hydrophobic compound, azobenzene, were examined. Series of synthesized alginate-derived polymeric surfactants (APSs) reduced the surface tension. The dissolving capacity of APSs toward azobenzene was about half that of SDS. In order to investigate the capacity of metal adsorption, Co and Pb were selected as a representative metal. The overall removal efficiency of APSs were high compared with that of alginate at pH 3, 5 and 7 respectively. Major mechanism of the heavy metal removal is the complex of metal with carboxyl group.
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