Epoxidized and Cyclocarbonated Star-Shaped Macromolecules as Bio-Based Internal and External Crosslinkers for Superabsorbent Polymer Hydrogels
| Autor: | Kourosh Kabiri, Parvin Naderi, Mohammad Jalal Zohuriaan-Mehr, Zeinab Karami |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Materials science Polymers and Plastics technology industry and agriculture macromolecular substances 02 engineering and technology 021001 nanoscience & nanotechnology Macromonomer chemistry.chemical_compound 020401 chemical engineering Superabsorbent polymer Chemical engineering chemistry Succinic acid Self-healing hydrogels Materials Chemistry medicine Thermal stability Epichlorohydrin 0204 chemical engineering Swelling medicine.symptom Fourier transform infrared spectroscopy 0210 nano-technology |
| Zdroj: | Journal of Polymers and the Environment. 28:1684-1695 |
| ISSN: | 1572-8919 1566-2543 |
| Popis: | Regarding the sustainability point of view, this study is dedicated to the use of two bio-based star-shaped crosslinkers for superabsorbent hydrogel (SAP) applications as replacement of fossil-based counterparts. The epoxide crosslinker (E-st-G-SA) was synthesized from the reaction of a star-shaped macromonomer based-on glycerol and succinic acid with epichlorohydrin. The second crosslinker (C-st-G-SA) was prepared through the CO2 fixation reaction of E-st-G-SA. After characterization of crosslinkers by 1H NMR and FTIR spectroscopies, E-st-G-SA was used as an internal crosslinker for SAP formulations. Next, the potential of E-st-G-SA and C-st-G-SA as surface crosslinkers for the abovementioned SAP was examined and C-st-G-SA presented a significant improvement of swelling under load up to − 38%, so it was selected as the preferred surface crosslinker for additional investigations. Moreover, rheological properties of the surface crosslinked SAPs demonstrated a higher swollen gel strength compared to that of intact SAP. The thermal stability of the intact and surface crosslinked samples was compared and the result showed an overall similar trend. Finally, the antibacterial activity of samples was evaluated and the results presented a satisfactory antibacterial property especially against S. aureus bacterium for the surface crosslinked sample but not for the intact one. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink