Sorption of lead(II) by proton-ionizable polyether resins

Novel ion-exchange resins have been prepared by condensation polymerization with formaldehyde of dibeozo acyclic and cyclic polyethers bearing a pendent acidic function (carboxylic acid, phosphonic acid monoethyl ester, phosphonic acid, or sulfonic acid). Such resins possess both ion-exchange and po...

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Bibliographic Details
Published in:Reactive & functional polymers 1998-03, Vol.36 (2), p.125-134
Main Authors: Laney, E.Elizabeth, Lee, Joung Hae, Kim, Jong Seung, Huang, Xiaowu, Jang, Youngchan, Hwang, Hong-Sik, Hayashita, Takashi, Bartsch, Richard A.
Format: Article
Language:English
Subjects:
Competitive divalent, heavy-metal cation sorption
Crown ether polymers
Formaldehyde condensation polymers
Ion-exchange resins
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Summary:Novel ion-exchange resins have been prepared by condensation polymerization with formaldehyde of dibeozo acyclic and cyclic polyethers bearing a pendent acidic function (carboxylic acid, phosphonic acid monoethyl ester, phosphonic acid, or sulfonic acid). Such resins possess both ion-exchange and polyether-binding sites for metal-ion complexation. The efficiency of Ph 2+ sorption and selectivity relative to Zn 2+ sorption are assessed as a function of: (1) the acyclic, pseudocyclic, or cyclic nature of the polyether unit; (2) the identity of the proton-ionizable group; (3) the length of the spacer which joins the proton-ionizable group to the polyether framework; and (4) for the proton-ionizable crown ether resins, the atom or group which is geminal to the functional side arm.
ISSN:1381-5148
DOI:10.1016/S1381-5148(97)00108-9