Removal of hazardous by radiation-synthesized copolymer hydrogels based on 2-acrylamido-2-methylpropanesulfonic acid and 2-dimethyaminoethyl methacrylate monomers
✍ Scribed by Horia M. M. Nizam El-Din; Elsayed M. Abdel Bary
- Publisher
- Society for Plastic Engineers
- Year
- 2011
- Tongue
- English
- Weight
- 641 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0272-8397
- DOI
- 10.1002/pc.21215
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✦ Synopsis
Abstract
Superabsorbent copolymer hydrogels were prepared by gamma irradiation of aqueous solutions of 2‐acrylamido‐2‐methylpropanesulfonic acid (AMPS) and 2‐dimethyaminoethyl methacrylate (DEMA) monomers mixtures. The thermal stability of hydrogels was evaluated by thermogravimetric analysis. The ability to adsorb Cu^2+^ ions and dyes by the prepared hydrogels from aqueous solutions was investigated. The swelling study, in water, showed that the hydrogels based on pure AMPS monomer and AMPS/DEMA copolymers reached the equilibrium state after 6 h. However, the hydrogel based on pure AMPS monomer showed higher swelling than the copolymer hydrogels based on AMPS/DEMA. It was found that the copolymer hydrogels based on different compositions showed affinity to absorb Cu^2+^ metal ions as well as basic and acid dyes; however, this affinity was found to decrease with increasing the ratio of DEMA in the initial feeding solutions. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers