ADSORPTION OF DIVALENT METALLIC IONS BY POLYUREAS HAVING OLIGO(OXYETHYLENE) UNITS IN THE MAIN CHAIN.

被引：0
|
作者：
Iwabuchi, Susumu [1 ]
Nakahira, Takayuki [1 ]
Ando, Hideki [1 ]
Inaba, Kazuhiro [1 ]
Kojima, Kuniharu [1 ]
机构：
[1] Chiba Univ, Chiba, Jpn, Chiba Univ, Chiba, Jpn
来源：
Polymer communications Guildford | 1986年 / 27卷 / 11期
关键词：
POLYMERS; -; Applications;
D O I：
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摘要：
Polyureas having 1-5 oxyethylene units in the repeating monomer unit were synthesized from alpha , omega -diamino oligo(oxyethylene)s and hexamethylene diisocyanate and examined as adsorbents for divalent metallic ions. The adsorption of divalent metallic ions on to the polyureas showed a high selectivity for Hg**2** plus ion. The adsorption of Hg**2** plus ion was analyzed in terms of the Langmuir adsorption isotherm, thereby affording binding constant K and maximum adsorption w//s, which are substantially smaller than those of the corresponding polyamides. The repeated use of these polyureas as Hg**2** plus adsorbents was examined.
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页码：339 / 341
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