Preparation of natural rubber based semi-IPNs superabsorbent and its adsorption behavior for ammonium
| Autor: | Li Li, Wenjun Gui, Zhenpeng Deng, Yanjun Cui, Zhifang Zhang, Yongsheng Xiang, Yumei Xu, Jia Wei |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Nitrogen
02 engineering and technology Biochemistry Water Purification 03 medical and health sciences chemistry.chemical_compound symbols.namesake Surface-Active Agents Adsorption Natural rubber Structural Biology Ammonia medicine Ammonium Molecular Biology 030304 developmental biology 0303 health sciences Aqueous solution Chemistry Langmuir adsorption model Hydrogels General Medicine Biodegradation 021001 nanoscience & nanotechnology Quaternary Ammonium Compounds Chemical engineering visual_art visual_art.visual_art_medium symbols Wettability Ammonium chloride Rubber Swelling medicine.symptom Polyethylenes 0210 nano-technology |
| Zdroj: | International journal of biological macromolecules. 166 |
| ISSN: | 1879-0003 |
| Popis: | In this study, a natural rubber (NR) based amphiphilic semi-interpenetrating polymer network (semi-IPN) superabsorbent hydrogel was designed and synthesized with natural rubber-graft-poly (acrylic acid-co-acrylamide) [NR-g-P(AA-co-AM)] network and linear poly (diallyldimethyl ammonium chloride) (PDADMAC). Through a series of characterization and test, the structure, morphology, thermal properties, biodegradation, and swelling properties of NR-g-P(AA-co-AM)/PDADMAC were determined. Subsequently, NR-g-P(AA-co-AM)/PDADMAC was used for ammonium adsorption to remove ammonium nitrogen in aqueous solution. The adsorption behavior of the absorbent was also studied. Results showed that the maximum water absorbency of NR-g-P(AA-co-AM)/PDADMAC was 112.04 ± 6.55 g/g and water retention capacity of soil with the superabsorbent was 115.62 ± 2.08%. The NH4+ adsorption quickly reached equilibrium and the maximum adsorption capacity was 13.02 mmol g−1 calculated from Langmuir isotherm model. The results suggest that the product is efficient for ammonium removal and can be used as water-retaining agents. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect