Preparation and Properties of Hydrogels Based on PEGylated Lignosulfonate Amine
| Autor: | William C. Hiscox, Jianwei Shi, Xiaoxu Teng, Jinwen Zhang, Wenjia Song, Hui Xu, Junna Xin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Diglycidyl ether General Chemical Engineering Chemical structure macromolecular substances 02 engineering and technology 010402 general chemistry complex mixtures 01 natural sciences Article lcsh:Chemistry chemistry.chemical_compound Polymer chemistry Fourier transform infrared spectroscopy Sodium lignosulfonate technology industry and agriculture General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry lcsh:QD1-999 Self-healing hydrogels Amine gas treating 0210 nano-technology Ethylene glycol Stoichiometry |
| Zdroj: | ACS Omega, Vol 2, Iss 1, Pp 251-259 (2017) ACS Omega |
| ISSN: | 2470-1343 |
| Popis: | Sodium lignosulfonate (SLS) was aminated to obtain a lignin amine (LA) compound, which was subsequently crosslinked with poly(ethylene glycol) diglycidyl ether (PEGDGE) to obtain hydrogels. The chemical structure of the resulting LA-derived hydrogel (LAH) was characterized by Fourier transform infrared (FTIR) spectroscopy, solid-state 13C NMR spectroscopy, and elemental analysis, and the interior morphology of the freeze-dried hydrogel was examined by scanning electron microscopy. NMR and FTIR spectroscopy results indicated that the amino groups of LA reacted with PEGDGE in the crosslinking reaction. The lignin content in the resulting hydrogel increased with an increase in the LA/PEGDGE weight ratio in the reaction, approaching a maximum (∼71 wt %) and leveling off. The hydrogel with such a composition happened to be the same as the one prepared by reacting the primary amines of LA and epoxy groups of PEGDGE in equal stoichiometry. These results strongly suggest that the formation of the hydrogel network structure was largely dictated by the reactions between the primary amines and epoxy groups. The gels with lignin contents at this level exhibited a superior swelling capacity, viscoelasticity, and shear properties. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|