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Two all‐aromatic polyhydrazides have been investigated with respect to their propensity to form metal‐chelate bulk polymer, films, and fibers. The aromatic polyhydrazide derived from isophthalic acid was found to give chelate bulk polymer with Ni+2, Ca+2, Ag+1, Hg+2, Pb+2, Zn+2, Cd+2, and Cu+2 which analyze for a 1:1 ratio of hydrazide link:metal ion. Films of the polyhydrazide–metal chelate were prepared by soaking polyhydrazide films in dimethylformamide solutions of metal salts. Tough fibers of the polyhydrazide–metal chelates with such metal ions as Cr+3, Co+2, and Ag+1 were prepared by passing polyhydrazide fiber through dimethylformamide solutions of these metal salts.
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Frazer et al. (1964) studied this question.
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