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## Experimental Synthesis of Gels: The gels used in this work were synthesized from acrylic acid and acryloyl derivatives of amino acids that contain a hydrophobic alkyl chain (of length = n) and a terminal hydrophilic carboxyl group [13]. Specifically we have used acrylic acid (AAC, n = 0), acryloyl-4-amino butyric acid (A4ABA, n = 3), acryloyl-6-amino caproic acid (A6ACA, n = 5), and acryloyl-8-amino caprylic acid (A8ACA, n = 7). Gels were prepared by free-radical polymerization of aqueous solution of the monomers in the presence of N,N¢-methylene bisacrylamide as the cross-linker. Polymerization was done in deionized double-distilled water at 40 C using ammonium persulfate as initiator. The gels were washed thoroughly and then dried to give approximately 0.5 cm diameter cylindrical samples. Complexation of the Gels: Metal complexation studies were done using nonionized, partially ionized, and fully ionized gels. We report here studies on complexation of the gels with Cu 2+ , Pb 2+ , Cd 2+ , Zn 2+ , and Fe 3+ ions. Complexation of the gels was carried out by placing the dried cylindrical gels in dilute aqueous solutions of 0.1, 0.05, and 0.001 M CuCl 2, 0.

Author

D. Chaudhuri; A. Kumar; I. Rudra; D. D. Sarma

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley; Research Square (ISSN 0935-9648)

Published

2001

Language

EN