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 |
|---|---|
| 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 |
Bibliographical note
Funding Information:This research was supported by the Division of Chemical Sciences of the Office of Basic Energy Sciences of the U.S. Department of Energy (Grant DE-FGO3-94ER14416) and the Texas Higher Education Coordinating Board Advanced Research Program.
Keywords
- Competitive divalent, heavy-metal cation sorption
- Crown ether polymers
- Formaldehyde condensation polymers
- Ion-exchange resins
ASJC Scopus subject areas
- General Chemistry
- Environmental Chemistry
- Biochemistry
- General Chemical Engineering
- Polymers and Plastics
- Materials Chemistry