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- Title
Hexafunctional poly(propylene glycol) based hydrogels for the removal of heavy metal ions.
- Authors
Zheng, Sudan; Shin, Jin Young; Song, Song Yi; Yu, Seong Jae; Suh, Hongsuk; Kim, Il
- Abstract
ABSTRACT Two types of degradable poly(propylene glycol) (PPG) hydrogels that are suitable for the absorption of heavy metals have been presented. The PPG-O-P(O)Cl2 fragments obtained by treating hexafunctional PPG with phosphorous oxychloride (POCl3) react with 1,3-propanediamine (PDA; Gel-1) or PDA together with 1,2-ethanedithiol ( Gel-2), to yield cross-linked and water-swellable hydrogels in a one-pot method. This protocol for the fabrication of PPG hydrogels exhibits promising advantages over prior methods including a short reaction time, mass-production, easy separation, and high yield. A series of heavy metal ions were employed to test the adsorptive properties of the hydrogels. Gel-2 shows better adsorption capacity than Gel-1 for all the metal ions and the metal ions adsorption efficiency of the two types of hydrogels is in the order of Fe(III) > Pb(II) > Cd(II) > Zn(II) > Cu(II) > Ni(II) > Co(II) > Hg(II). The amounts of metal ions adsorbed increases with metal ion concentration and hydrogel dosage, but decreases with temperature. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40610.
- Subjects
HEAVY metal toxicology; HYDROGELS; POLYPROPYLENE oxide; CROSSLINKED polymers; MASS transfer coefficients; FUNCTIONAL groups
- Publication
Journal of Applied Polymer Science, 2014, Vol 131, Issue 16, pn/a
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.40610