Abstract
Novel ion-exchange resins have been prepared by condensation polymerization with formaldehyde of dibenzo 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 Pb2- sorption and selectivity relative to Zn2+ 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.
Original language | English |
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Pages (from-to) | 125-134 |
Number of pages | 10 |
Journal | Reactive and Functional Polymers |
Volume | 36 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1998 Mar |
Externally published | Yes |
Keywords
- Competitive divalent, heavy-metal cation sorption
- Crown ether polymers
- Formaldehyde condensation polymers
- Ion-exchange resins
ASJC Scopus subject areas
- Chemistry(all)
- Environmental Chemistry
- Biochemistry
- Chemical Engineering(all)
- Polymers and Plastics
- Materials Chemistry