Swelling and Metal-Ion Adsorption Properties of Dopamine-Conjugated Polyaspartate Hydrogel
| Autor: | Ji-Ho Seo, Ji-Heung Kim, Sung Jun Park, Seung Ho Um, Sung Woo Nam, Young-Jun Kim |
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| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Catechol Environmental Engineering Aqueous solution Materials science Polymers and Plastics Buffer solution Polymer chemistry.chemical_compound Adsorption chemistry Polymer chemistry Materials Chemistry medicine Adhesive Carboxylate Swelling medicine.symptom Nuclear chemistry |
| Zdroj: | Journal of Polymers and the Environment. 23:90-96 |
| ISSN: | 1572-8900 1566-2543 |
| DOI: | 10.1007/s10924-014-0660-0 |
| Popis: | Biodegradable hydrogels based on dopamine-modified polyaspartate were prepared, and the swelling behavior was investigated along with their metal-ion adsorption property. The catechol group of dopamine is well known to exhibit unique adhesive characteristics on a variety of organic/inorganic surfaces. Dopamine-modified polysuccinimide (DOP-PSI) was prepared by nucleophilic reaction of dopamine to polysuccinimide, and then crosslinked by adding diaminobutane as the crosslinker to yield an organogel in DMSO. Subsequently, the DOP-PSI gel was hydrolyzed in a pH9 buffer solution to produce the final, water-swollen hydrogel of DOP-modified polyaspartate (DOP-PASP). The swelling property of DOP-PASP was investigated in various aqueous solutions containing different metal-ions. The swelling degrees of the resulting gels were variable depending on the preparation conditions, such as polymer concentration and crosslinker level, though greater swelling of 450 g/g was observed in water. In ion-containing solutions, the swelling decreased as the ion concentration increased. As the valency of the ion increased, (i.e., Na+1 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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